>

Step 3 score percentile - What is a Good Step 2 Score for Internal Medicine Residency? 221-230

Clownsarsch Attending • 5 yr. ago. Step 3 is give or take when trying to opt for the higher t

Differences between Step scores had a moderate correlation with Step 1 score (r = 0.425, p < 0.0001) with a trend toward higher performers on Step 1 scoring lower than their previously achieved percentile and vice versa (Figure (Figure2, 2, Table Table3). 3). The intersection point between lines of best fit for expected difference based on ...I managed to score in the same range, despite taking it 2 weeks post exam, already forgot stuff, and 3 out of 4 blocks I took during evening when I wan't as sharp/focused. ... For context, I am preparing for step 3. I have long forgotten the minutiae of step 1. I got 63,63,85,70 (average of 70% correct), and my three-digit score is 223. ReplyHow to calculate percentiles for ungrouped data? Step 1 - Enter the $x$ values separated by commas. Step 2 - Enter the nuber between 1 to 99 (inclusive)For example, if you score in the 25th percentile, then 25% of test takers are below your score. The “25” is called the percentile rank. In statistics, it can get a little more complicated as there are actually three definitions of “percentile.” Here are the first two (see below for definition 3), based on an arbitrary “25th percentile”:CH 1 Chapter 1 Introduction to the BRIGANCE® Screens III 1 Overview The BRIGANCE® Screens III offer developmental screening of children from infancy through first grade. The Screens III are conveniently grouped into five volumes that address the needs of specific users. The BRIGANCE® Early Childhood Screens III include: 1 The Early Childhood Screen III (0-35 months)—A Step 1 NBME has 200 questions, while Step 1 has 280 questions. If every single question on Step 1 was worth the same amount, then each question might be worth 1.09 * 200/280 = 0.78 points/question. Note it has been speculated that up to 25% (80 questions) of Step 1 is "experimental" and won't contribute to your score.The lower SAT score in this range is the 25th percentile, while the higher score is the 75th percentile. Finally, follow these steps to find your SAT goal score: #1: Make a chart with your schools' names and their 25th and 75th SAT percentiles. #2: Look up SAT score info for your schools.Your Intensity Score tells you how many renewal activities you do in a week minus the number of stressful events or activities. More renewal than stress will indicate greater sense of well-being, less anxiety and depressing thoughts, less damages from chronic stress, and more energy. Your percentile is: PSI: Intensity Score. Percentile.For example, the average STEP 1 score for 2020-21 first-year residents entering Anesthesiology was 232.7, and the average Step 2 CK score was 243.3. Data are for graduates of MD-granting and DO-granting U.S. and Canadian schools and of international medical schools. ... 10th Percentile 25th Percentile 50th PercentileFor example, the average STEP 1 score for 2019-20 first-year residents entering Anesthesiology was 231.9, and the average Step 2 CK score was 242.6. Data are for graduates of MD-granting and DO-granting U.S. and Canadian schools and of graduates of international medical schools. Specialties are excluded if more than 90% of the entering ... You calculate the percentile rank in the final step. You divide the figure you got in the last step by the percentile value you found in the first step. Example: You divide 80 by 2600. The final value is 0.03 or the 3rd percentile rank. The calculations appear as follows: Related: How to calculate annual earnings from an hourly ratePredicted Score: 235 +/- 8 Actual STEP 2 score: 233 After taking Step 1 I took a couple weeks off, then spent about 6 weeks studying for Step 2. I had clinical electives during 3 of those 6 weeks, but 2 clinical weeks were pretty chill. Overall I'm pretty pleased with how things turned out and relieved to be done.Start by taking 0.20 x 25 = 5 (the index); this is a whole number, so proceed from Step 3 to Step 4b, which tells you the 20th percentile is the average of the 5th and 6th values in the ordered data set (62 and 66). The 20th percentile then comes to (62 + 66) ÷ 2 = 64. The median (the 50th percentile) for the test scores is the 13th score: 77.Step 1: Convert the percentile to a lower probability, if necessary. Step 2: Use either a graphing calculator or the z-score table to find the z-score. When using the table, choose the percentile ...Uncategorized. To pass Step 3, how many percentiles do you need? According to the NBME, the median score for US medical graduates taking Step 3 for the first time is around 226. The 25th percentile has a value of around 216, while the 75th percentile has a value of around 236. At the start of 2020, Step 3’s minimum passing score was raised to ...The ASVAB raw score is calculated by adding the word knowledge score twice, the paragraph comprehension score twice, the arithmetic reasoning score and the mathematics knowledge score all together. This raw score is weighted to determine th...Take the lower-ranked value in step 3 and add the value from step 4 to obtain the interpolated value for the percentile. For our example, that value is 35 ... I am planning to use percentile scores for this purpose. Can I …Our 99th percentile tutors help you increase your score with personalized, digital USMLE Step 3 tutoring that focuses on identifying and improving what ...Score Hofstee Compromise Range of Acceptable Minimum Passing Scores Hofstee Compromise Recommended Passing Score 2015 59 54 to 66 62 2019 61 63 to 72 68 Table 3 provides a summary of the Hofstee results for honors. The 2019 study results indicate that the minimum acceptable score for honors should fall between a score of 86 to 92.Although percentile ranks for Step 2 CK and Step 3 are shown in the same norm table, it is important to note that scores on the two Steps are not directly comparable. For example, a score of 220 on Step 2 CK is not equivalent to a score of 220 on Step 3. A comparison of scores across Steps is not appropriate. Passing ScoresStep 3: Calculate the percentile score (P) of a candidate with rank (r) in the QA section as: P = ( ( N-r ) N ) x 100; Step 4: Round off the calculated percentile score (P) of a candidate up to two decimal points. For example, all percentile scores greater than or equal to 99.995 are rounded off to 100, all percentile scores greater than or ...It just means most people are getting below 72% with those type of questions. I agree. I did AMBOSS first, then UW and am now going through a second pass of AMBOSS. My percentiles have sequentially gone up with each pass i.e. (first AMBOSS 85th percentile, first UW 90th percentile, 2nd AMBOSS 96th).How to calculate percentiles for ungrouped data? Step 1 - Enter the $x$ values separated by commas. Step 2 - Enter the nuber between 1 to 99 (inclusive)Step 1 and Step 2 Scores: Step 1 - Score. 235+ looks like a very solid score in Pediatrics, with the median score among applicants ultimately receiving an interview being 220. Range programs do NOT typically offer interviews: 210-220 seems to be the minimum threshold we would recommend for having a good chance at enough interviews.The average score for Step 3 falls on 228 with a standard deviation of 15. On the other hand, the current passing score of the USMLE Step 3 is 198 . If you want to secure a good result, then aim for the average score or anything higher than that will do. While the passing score will change from year to year, it is typically within a small range that is preserved. According to the NBME/FSMB, the passing score for Step 1 in 2018 was 194, answering approximately 60% of all questions correctly (For more information, check out our EMP blog on interpreting your score and understanding your percentile).We are online. Typically replies in a few minutes. BB. Start Conversation. Powered by Chatwoot. Want to know what your actual Step 1, Step 2 or Step 3 score will be? Submit your practice exams into our calculator and we can tell you! (Need to submit at least 2 exams)View graph of USMLE Step 1 Score - Percentile Conversion. Kaplan QBank: Note: For the best USMLE Step 1 score comparison, the Kaplan QBank score entered should be an average of the last 300 questions taken the first time through QBank (no question repeats). You do not need to finish all of QBank to receive an estimate; just enter an average of ...Step 4: Identify the data value for which you are interested to find the percentile; Step 5: Count the number of data values that are less than the above value; ... Number of scores below 40 = 3. Using the percentile formula, Percentile = (Number of Values Below “40” / Total Number of Values) × 100. Percentile of 40 = (3/10) × 100USMLE Score Interpretation Guidelines provide score interpretation information for Step 1, Step 2 CK and Step 3 examinations. Examination Results and Scoring The USMLE program provides a recommended pass or fail outcome on all Step examinations. Recommended performance standards for the USMLE are based on a specified level of proficiency. Uncategorized. To pass Step 3, how many percentiles do you need? According to the NBME, the median score for US medical graduates taking Step 3 for the first time is around 226. The 25th percentile has a value of around 216, while the 75th percentile has a value of around 236. At the start of 2020, Step 3's minimum passing score was raised to ...Not sure if people have seen this yet, but it seems that a score of 300 is in fact the maximum possible score for the 3 step exams, ... Score = percentile 250 = 85th 255 = 91st 260 = 96th 265 = 99th 270 = 100th 275 = 100th 280 = 100th 285 = 100th 290 = 100th 295 = 100th 300 = 100th You might as well try to compare the relative altitude of clouds.Step 3: We count 0 data values that are less than 39. Step 4: Calculate the percentile, k, that is associated with a score of x using the formula. k = (0/48)*100% = 0%. This means that the student who scored 39% is in the 0 percentile. A score of 39% is not higher than any other score. b) For a score of 60%:May 5, 2023 · Your score and percentile on the USMLE Step 2 exam are used to determine your proficiency in the tested material. These scores can be compared to other test-takers and previous test-takers (within a three- to four-year period). To pass the Step 2 CK exam, you must answer 60% of the questions correctly to achieve a minimum score of 214. To convert z-score for a number above the mean to percentile, use the Standard Normal Table to find the area beyond Z and subtract this area from 1.00. Multiply the result by 100 to get the percentile. To convert z-score for a number below ...2.1 Example of MHT CET Score Calculation. Step-wise Process of Normalization and Percentile Score Preparation. 3.1 Step 1: Distribution of students among two days and two shifts per day. 3.2 Step 2: Result preparation for every session. 3.3 Step 3: …Step 2 Score Percentiles: Side-By-Side Comparison With Step 1, Step 2 CK and Step 3. For all tests, scores range from 1-300, but the same score on a different test step will land you in an entirely different percentile. The mean scores for Step 1 over the past several years have ranged from 231 to 235. USMLE STEP 1 Score, 4, -, -, -, -, -, -, -. USMLE STEP 2 CK Score, 2 ... Plastic Surgery: Integrated, COMLEX Level 1 Score, 3, -, -, -, -, -, -, -. COMLEX Level 2 ..."Percentile Ranks." This number indicates the percentage of examinees that scored at or below the examinee's equated percent correct score. Correct Score Percentile Ranks Equated Percent Correct Score Ranks 94 and above 100 67 20 93 100 66 16 92 100 65 14 91 99 64 11 90 99 63 9 89 98 62 8 88 97 61 7 87 96 60 6 86 94 59 5 85 92 58 3Overview. Step 3 assesses whether you can apply medical knowledge and understanding of biomedical and clinical science essential for the unsupervised practice of medicine, with emphasis on patient management in ambulatory settings. It is the final examination in the USMLE sequence leading to a license to practice medicine without supervision. When I went back to do my second pass during dedicated, I averaged 71%. Hoping/Predicted for a Step2 in the 240-250 range. The average stayed pretty consistent throughout dedicated. But yeah, a lot of stuff from clerkships that I had just forgotten details about. [deleted] • 2 yr. ago. First pass 50% Second pass 75%.Your UW percentile rank must have been 95+ with that high a first pass percentage! 7. saltinthesnow28 • PGY1 • 2 yr. ago. UW: 75% correct; step 3: 249. 4. bonez_doc • 2 yr. ago. UW first pass 60% (only got through 900 questions), UWSA 1 224, Step 3 score 234. 4. The Percentile scores for the Total Raw Score for all the four sessions (Session-1: Day-1 Shift-1, Session-2: Day-1 Shift-2, Session-3: Day-2 Shift-1 and Session-4: Day-2 Shift-2) as calculated in Step-2 above would be merged and shall be called the CET scoresThis post helped me with my prep so time to give back. Background: IMG, 25x in all 3 steps, >90th percentile in all 3 ITEs. Prep: started in June 2022 with the awesome review. It was a decent review but I only did it because my program was paying for it. Finished Uworld first pass 13 days before exams; 71% correct with 88th percentile.Next, we calculated the average of USMLE Step scores and predicted the ABIM-CE pass result using the average Step scores. Table 3 shows the results from the analysis of maximum likelihood estimates. A 10 points increase in average Step scores will lead to a higher chance of passing ABIM-CE tests (OR = 2.96, 95% CI = 0.95-9.20)) but not ...To find the percentile rank for a particular Step 1 score, locate the score in the table and look up the percentile rank in the column to the right of the score. For example, a score of 212 has an associated percentile rank of 52. This indicates that 52% of examinees from U.S. and Canadian schools taking Step 1 for the first time in 1995-96 had ...Step 3: We count 0 data values that are less than 39. Step 4: Calculate the percentile, k, that is associated with a score of x using the formula. k = (0/48)*100% = 0%. This means that the student who scored 39% is in the 0 percentile. A score of 39% is not higher than any other score. b) For a score of 60%:272. 28. r/medicalschoolanki • 17 days ago. A 2023 study about Anki and the impact of Anki usage in a medical school curriculum on academic performance. Anki usage is significantly associated with increased exam scores regardless of a student’s inherent test-taking ability and may be beneficial for students with lower MCAT scores.Understanding the USMLE Step 3 Score Percentile. Before delving into the different passing scores, let's examine what percentile means for the USMLE Step 3 exam. In simple terms, percentile rank indicates the percentage of test-takers who have scored below you on the same exam. For instance, if you achieve a 70th percentile score, that means ...5.) Don't expect to score as high on step 3 as you did on step 1 or 2. The average is lower, and the SD is smaller. Getting a 260 on step 2 is easy and common. I have never seen a 260 on step 3. In fact, the 254 posted on this thread is the highest I have ever seen. Proof of this is that a low 230s on step 3 is a 99, not so with step 1 or 2. 6.)Step 3: Calculate the percentile score. The formula for computing the percentile is given by. The formula to calculate sectional as well as the overall CAT percentile of each candidate is the same, which is mentioned below: P = (R/N) × 100. where, P= Percentile score.Your UW percentile rank must have been 95+ with that high a first pass percentage! 7. saltinthesnow28 • PGY1 • 2 yr. ago. UW: 75% correct; step 3: 249. 4. bonez_doc • 2 yr. ago. UW first pass 60% (only got through 900 questions), UWSA 1 224, Step 3 score 234. 4.The raw score formula is simply the z-score formula solved for x, the raw score. Depending on what your distribution represents, start by either writing the formula for the raw score of a population: x= μ+zσ x = μ + z σ. Substitute in values for this problem (z-score, mean, and standard deviation) into the formula: x= 150+(3)(27) x = 150 ...2024 Bulletin The Bulletin includes information on all aspects of USMLE, such as eligibility requirements, scheduling test dates, testing, and score reporting. You must review and become familiar with the Bulletin before completing your application for USMLE Step 1, Step 2 CK, or Step 3.Above average: scores that fall between 650-730. High: scores that fall between 730-800. Here's a breakdown of the GMAT score distribution: Approximately 1% of test takers score above 760. Approximately 13% of test takers score above 700. Approximately 25% of test takers score between 660 and 700. Approximately 30% of test takers score ...Common reasons for not having enough preparation time are 1) underestimating the exam, and 2) poor timing of your exam date. The saying that we often hear is you need “two months for Step 1, two weeks for Step 2, and a #2 pencil for Step 3”. Unfortunately, that is not always the case.Follow these steps to calculate the kth percentile: 1. Rank the values. Rank the values in the data set in order from smallest to largest. 2. Multiply k by n. Multiply k (percent) by n (total number of values in the data set). This is the index. You'll refer to this in the next steps as the position of a value in your data set (first, second ...Members who are done with Step 3 Exam Please post your NBMEs, UWSA, UW, Kaplan online scores along with correlation to real step 3 score. Mention important points such as repeated UWorld, or done it offline, and other relevant information. This will help others currently preparing for Step 3 Exam.The all-comer pass rate of step 3 is 97%. It goes up to 98% if you just look at first timers. The one thing that bugs me about that statistic is that residency selects for people who passed/did decently on step 1 and 2 CK. Yeah, people go to residency after failing and with low scores, but that pass rate is better defined as "among people who ...Dates for USMLE Step 1 Transition to Pass/Fail Only. Transition Begins with Exams Taken on or after January 26, 2022. To receive a numeric score, examinees must take their exam on or before January 25, 2022*. Step 1 Exams. Test on or before Jan. 25, 2022. (Please schedule your appointment with Prometric well in advance of your desired …Survey Reports. Results of the 2016 NRMP Specialties Matching Service Program Director Survey (PDF, 428 pages) This report examines the factors fellowship program directors use to select applicants to interview and rank. Data on 46 specialties with 10 or more responses are included in the report. The latest Match results and data for fellowships.If you’re thinking about applying for a student loan, a new home, or a new car, checking your credit is a great first step. There are a few easy ways to check your own credit score online. The best part is that many of these options are fre...The following are the steps to calculate the kth percentile (where k is any number between zero and one hundred). Step 1: Arrange all data values in the data set in ascending order. Step 2: Count the number of values in the data set where it is represented as 'n'. Step 3: calculate the value of k/100, where k = any number between zero and one ...18 Mar 2020 ... Previously, USMLE reported scores in percentile format. However, in ... The minimum USMLE Step 3 passing score will be raised to 198 from 196 ...Passing Step 1 of the USMLE after your second year of medical school allows you to begin practicing medicine under supervision. Passing Step 2 CK and Step 3 - and earning a good score - will make you a competitive candidate for residency programs and fellowships. Once you pass the third and final USMLE, you are eligible for a medical license.Results: Data were available for 342 residents. The Core examination failure rate for 121 residents with Step 3 scores <50th percentile was 19.8% (fail relativerisk=2.26), …Step 3: To find the area under the curve between 200 and 220, ... Problem 3 - Given z-scores, Finding Percentiles and x-values 10. Use the diagram from the first page of the worksheet to help answer the following statements. a. The x-value with a z-score = 0 is in the _____ percentile. b.4 Okt 2018 ... The USMLE Step 3 examination score report has been redesigned to reflect both advances in the underlying science of assessment and changes ...tables 1-6). In order to assign percentile scores for all students, complete percentile ranging tables were generated and are shown in tables 7-12. As shown in the tables, data from quarter 1 will be used to assign percentiles in clerkship periods 1-3, while data from quarter 3 will be used for clerkship periods 4-6. Off cycle students Examination Series Sequence. The COMLEX-USA examination series follows a progressive sequence broken into three levels described below. Osteopathic medical students and residents are deemed licensure exam “candidates” as referred to throughout this site and must be verified eligible to take each level of COMLEX-USA by their college of …SCORE RELEASE THREAD 05/04/2023. Goodluck to everyone. Please share your scores!! Test date: 18/03 Us-IMG Step 1:206 Uworld % correct: 53% Nbme 10: 211 Nbme 11:221 Uwsa 1: 209 Uwsa 2: 213 Free 120%:73 % Predicted score: not so sure i think it was 222+/- 10 or something like that Actual: 230. My kind of dude.•To use the table, locate an examinee's score in the column labeled "CBSE Score" and note the entry in the adjacent column labeled "Percentile Ranks." This number indicates the percentage of examinees that scored at or below the examinee's CBSE score. CBSE Score Ranks CBSE Score Ranks 254 and above 5199 185 251 99 182 47The equation for the Z-score of a data point derives by using the following steps: Step 1: Firstly, determine the mean of the data set based on the data points or observations, which are denoted by xi, while the total number of data points in the data set denotes by N. Step 2: Next, determine the standard deviation of the population based on ...Step 3 assesses whether you can apply medical knowledge and understanding of biomedical and clinical science essential for the unsupervised practice of medicine, with …A USMLE Step 3 score can help to strengthen a residency application, but not as much as you might think. The Step 3 was the last factor that Program Directors consider when conducting interviews, according to the 2014 NRMP Program Director Survey. ... Percentile Calculated Scores 250 84 85.31 255 91 90.32 260 96 93.94 265 99 96.41 USMLE Scores.Step 3: Determine Your SAT Goal Score. Now, it's time to figure out your SAT target score. Find the highest 75th percentile score in your chart—this will be your goal score, as it's the one most likely to get you accepted to all the schools you're applying to.. In our sample chart, the highest 75th percentile SAT score is 1390 for Clarke University.3. Read First Aid over the week-and-a-half leading up to when I sat for the real deal and finished with the first aid cases at the back, thought these were actually pretty helpful. I'm a medicine prelim into going into Derm, my stats: Step 1: high 250s. Step 2: high 260s. Step 3: 252.Step 1 213, step 2 222. UWSA 2 1 week prior I scored 240 so was pretty hopeful. Was hoping to apply IM (community programs) but worried about my odds of matching now. Pretty bummed overall, never been a good test taker …Step 3 scores were converted to percentiles based on Z-score, with Core outcome and perfor-mance analyzed for Step 3 groups based on 50th percentile and based on quintiles. Core outcome was scored as fail when conditionally passed or failed. Core performance was measured by the percent of residents with scores below the mean.The current passing score for the Step 2 CK examination is 209. With a possible score of 300, you have to get over ⅔ of the items correctly to achieve a pass. However, you should not just aim for a passing score. If you want to get into your dream residency program, you need to at least aim for the average score that others got to snatch a match.I'm taking step 3 in a week and have been casually doing UWorld blocks for the past 3-4ish weeks (little over halfway through the Q bank but am obviously not going to finish it). Just took UWSA1 and scored in the 95th percentile which I was thrilled about, but the predicted score was in the 230s which surprised me - I thought it would be higher ...The grading and its relationship to Step 1, according to the NBME: The subject examination score is [was originally] scaled to. ... CBSE Score Percentile Step 1 Equivalent; 54 (or less) 18: 160: 62: 50: 180: 70: 77: 200: 78: 92: 220: 86: 98: 240: 94 (and above) 99: 260 . So it's hard. Without doing any Step preparation (outside of attending ...Here's to a smooth sailing third year, no Prometric drama with Step 2, in-person aways and interviews, and no CS/hopefully PE. School: bone wizard. Step 1: mid 230s. Level 1: mid 570s. Step 2 goal: 250+. Level 2 goal: 600+. Interests: EM, OB/GYN (distant second) Rotations (in order): Peds, IM, FM, Psych, Neuro, Surgery, EM, OB/GYN and then ...E.g., a 1.34 average yields a 13 overall impact score. Step 3 – Percentiles are determined by matching an application's overall impact score against a table of relative rankings containing all scores of applications assigned to a study section during the three last review cycles. Step 3 consists of multiple-choice questions (MCQs), also known as items, and computer-based case simulations. Step 3 is a two-day examination. The first day of testing includes 232 multiple-choice items divided into 6 blocks of 38-39 items; 60 minutes are allotted for completion of each block of test items.Title: MCAT total and section score percentile ranks_2023_for Web.xlsx Author: YJin Created Date: 3/30/2023 10:36:31 AMActual Step 2 scores 2023 . 2023 Step 2 score breakdowns. Hoping to eliminate reporting bias with anonymous poll. Could only have 6 categories so divided into 15 point ranges. ... I would have recommended stratifying by evenly distributed percentiles (converted to 3 digit bc people may not know their percentile). The 246-260 range covers nearly ...CUSOM Scores ≥ 500 75.00%. Data as of 09/01/2023. Learn more about COMLEX-USA Level 3 at NBOME.org. Campbell University School of Osteopathic Medicine (CUSOM) first-time pass rates and mean scores for students who took COMLEX-USA Level 3.Passing Step 1 of the USMLE after your second year of medical school allows you to begin practicing medicine under supervision. Passing Step 2 CK and Step 3 - and earning a good score - will make you a competitive candidate for residency programs and fellowships. Once you pass the third and final USMLE, you are eligible for a medical license.I recommend taking uwsa 1 and 2 to predict your scores. 58% in my experience is on the lower end but these are not simulated conditions so your real scores might vary. Don't forget that CCS cases are 25-30% of your score so its very high yield to do well on that section. Good luck, PM if you need additional information, happy to helpTo score in the 90 th percentile of an exam does no, There are five possible grades: S – Outstanding. 1 – Very Good. 2 – Good. 3, Step 3: Determine Your ACT Goal Score. The third st, The percentile score is not the same as the percentage of marks obtained. Step 3: Calculation of the No, To find the percentile rank for a particular Step 1 score, loc, Overview 2022 Score Report Changes How to Purchase Score Reports Resources Health Systems S, NBOME, Convert the MCAT score percentile to the equivalent, Jul 30, 2023 · Reaction score. 505. Jul 30, 2023. #9. TheRea, Step 1: 200, step 2 Ck: 216, Step 2Cs: pass (first try). Step 3: 196, Your UW percentile rank must have been 95+ with that high , While percentile scores are particularly useful in clinical practi, May 5, 2023 · Your score and percentile on the USMLE Step 2, But the reality is that most people spend 1-2 weeks studying for , Step 1 213, step 2 222. UWSA 2 1 week prior I scored 240 so w, the correlations at the 25th and 75th percentiles. 5, The equations are as follows (where x is the % correct for , Results: Data were available for 342 residents. The Co.