Nbme 7 score conversion. 49K subscribers in the Step2 community. Get a 95-100% and that's a good sign. Each question on Step 1 CBSSA 30 is worth 1. Relieved is an understatement. MembersOnline. The MCAT (Medical College Admission Test) is offered by the AAMC and is a required exam for admission to medical schools in the USA and Canada. Feb 15, 2022 · Percentile scores are dependent on the performance of all candidates in a given testing cycle; therefore, three-digit scores for a given Level examination may correspond to different percentiles for different testing cycles. UWSA 1 -215. I scored 61 and it gave me 83% chance of passing. So that correlates to 246 for NBME10. Thanks! Jan 21, 2013 · The NBME shelf exams were originally scaled to a mean of 70 and a standard deviation of 8. Jul 13, 2016 · Sure there's a correlation. 4. Dec 13, 2016 · Feb 23, 2022. i know there’s an excel sheet but I’m very confused on how to work it! my % correct is 87%, so if anyone can convert it for me, that’d be a huge help! There's this post that gives you the excel sheet you mentioned, and based on the line of best fit for the NMBE 120 and 87% correct, that would work out to be about a 248! (rounded up from SUBJECTEXAMINATIONPROGRAM COMPREHENSIVEBASICSCIENCEEXAMINATION(CBSE) SCOREINTERPRETATIONGUIDE NBME The Health and Wellness Coach Certifying Exam measures the foundational knowledge, skills, tasks, and abilities essential to the practice of health and wellness coaching. Trust your scores everyone if I remember correctly, MDpharm said a while ago that it would be available by Halloween. No offline conversion is currently available because of the limited availability of the form in Aug 28, 2012 · NBME Step 2ck Offline Correlation Table. Based on these experiences and identified gaps in study resources, I created Step Prep with two main objectives: 1) Provide free, high-quality answer explanations to NBME practice exams. New comments cannot be posted. 3. /r/MCAT is a place for MCAT practice, questions, discussion, advice, social networking, news, study tips and more. SUBJECTEXAMINATIONPROGRAM COMPREHENSIVECLINICALSCIENCEEXAMINATION(CCSE) SCOREINTERPRETATIONGUIDE NBME New NBME conversion thread. Per the NBME, this number reflects the percentage of how much of the content assessed by the CBSSA you have mastered. There’s a post with the formulas in the sidebar. This is coming from an IMG who passed Step 1, Step 2 CK, Step 2 CS, Step 3, and currently finishing residency. READ THE RULES BEFORE POSTING USMLE Step 2 CK is the second national board exam all United States medical…. READ THE RULES BEFORE POSTING! // USMLE Step 1 is the first national board exam all United States medical May 6, 2014 · NBME's underpredict really badly. Maybe you can try it. If you take 6 or 8 and are still scoring well below your goal you may want to take a UWSA to The R 2 values are all pretty great, even NBME8. Jul 21, 2015 · 0. word on the street is to add 5 -7 points to the % score to estimate the old CBSE 2-digit score. I think it is well known that NBMEs, 7 in particular, under predict. NBME 20 3 Digit Score Calculator. 0. Feb 13, 2016 · NBME 13: 92% 610 250 NBME 19: 94. The data in this appendix show the cutoff numbers for passing a 3 digit score is useless, you should really focus on the chance of passing. That was by far the hardest test of my life. 10421 x number of wrong questions) The data for the NBME 14 is limited (may not be very precise yet) If you want to help Sep 6, 2023 · The Score Predictor tool takes into account factors such as the specific NBME assessment taken, the raw NBME score, and the date of the assessment. For example, if you took Is NBME 7 predictive of the exam? How do you do the score conversion from the NBME score? The score given after taking it is not a 3 digit score online. clarification on study topics, as well as score release threads. temporary sticky. SUBJECTEXAMINATIONPROGRAM EMERGENCYMEDICINEADVANCEDCLINICALEXAMINATION SCOREINTERPRETATIONGUIDE NBME I was already able to collect some data for the NBME 13 scores that were posted before and come up with an initial score converter. At the top of your score report for CBSSA, instead of finding a 3-digit score you will a total equated percent correct score: #%. In other words, to pass USMLE Step 2 CK, you only need to answer around 57% of items correctly. UW1 (2 wks before scheduled date): 262. Did u gave online? 259. I also used Exam Master here and there which was absolutely useless. Does anyone have rough conversions for their NBME raw score and how it translated to their 3-digit score? Taking NBMEs offline and want to get a feel (ex: I missed 10 and that was a 270) What this says is that NBME 6-8 are comparable to NBME 9 and 11, with NBME 10 showing a slightly stronger correlation to actual Step 2 CK score. 5 weeks before. But, if that helps, got 42 qs wrong, scored 256. Hey, I found this offline conversion somewhere and it seemed pretty accurate. 0000002066*A1^3+0. how you calculated? 64 wrong=231. 176 Your CBSE Score 194 Minimum Passing Score Step 1 xam is e 8 points. That’s 255-258. #8. No more 3 digit score (300). My 82% gave 99% passing probability. — Travis Benson, MD (@TravisABenson) February 13, 2021 I will add it's underpredicts everyone by 10 lol. If you took it offline, you wont have access to the est chance of passing; but generally if its above 2/3 correct you're good. All the comment section here is giving there online scores? Offline NBME score calculator? comments. There is a score converter out there but ppl saying it isn't that accurate for nbme 12. Time for new graphs and new data collection as the scoring system has changed (plus NBME has also modified their scoring system). Congratz bro. Probably better idea with more tests using the score predictor though, the one at the top of this thread predicted me within 3 points. With 1 minute and 30 seconds theoretically allotted to each question, you have 1 hour and 15 minutes to complete each section and 5 hours total for the whole exam. I recently took NBME 20 offline and have started working on a calculator for predicting 3 digit score based off of total number of questions missed (% correct). for your reference, i got 46 incorrects, 77% which correlates to 250. #17. Share. Score conversion NBME 12 is least accurate. Conversion factor. Only post if you took it ONLINE please. NBME Form score conversion? Hi friends! Wanted to try a different source of questions so I got an NBME, form 7, and went through it yesterday. NBME 12 (1 wk before scheduled date): 267. Reply. With old forms being discontinued, form 24 will only grow in popularity moving forward. For some weird reason, those who took their STEP1 before the question bank switch in early May, NBME 19 underpredicted their scores more relative to those who took it after. I felt horrible after taking 7 and dropping so much from UWSA1. The probability of passing Step 1 is easier to interpret: it’s simply an estimation of your likelihood to pass the exam if you’re going to take it in the next week. NBME 13 score = 301. Thanks. 4 days ago · Probability of Passing Step 1. However, new nbme scoring system is giving it as around 92-95% chance of passing. Other NBMEs were also 245-250. Learn about the different types of NBME assessments, find information on your upcoming exam and view additional student resources. The NBME tests are written terribly so you have to be really good at making correct assumptions in the questions. (keep in mind the equated percent correct, which The Comprehensive Basic Science Self-Assessment is a practice test designed for students planning to take the USMLE Step 1. 34 NBME 16: 1. 32 NBMe 15: 1. 75% equated percent correct, 99% chance of passing. Dec 29, 2018 · Genuinely confused about score conversion. Add a Comment. I think I had the same percentage and got 258. Which assessment was this? I’m looking for medicine firm 7. 5 - (1. Anyone have a good score conversion for these? Almost all of my blue bars were above the average, but the numbered score seemed like it was below average? Check the very top pinned post. May 3, 2008 · The equation I posted had multiply by 4 added in there. Here’s the link to the offline calculator for future reference. Both UWSAs were at 260. Editing to add the rest of my practice scores for anyone who cares in the future: NBME 11 (4 days before): 268. Keep in mind that these estimates are not exact conversions, but rather an approximation. How to convert offline NBME 13 score? Just took NBME and got a 78. 84% => 252, YMMV! My exam is in 9 days and I scored an 80% on the free 120 which freaked me out cause I hear that correlates to a 230, my nbme scores so far are 18-250,16-251,17-247,uwsa2-249. It features multiple-choice questions on content typically covered in clinical encounters. Aug 23, 2008 · If someone who recently took NBME 7 online can post their percentage correct and their 3 digit score, that would be awesome. Doing the exams to get exposure to the questions is more important than using it to predict your score. Mar 21, 2018 · First. USMLE Step 1 Practice Exam Score Conversion (NBME 20-24) As the 20-24 forms retire on 24th/25th March, can we please post the number of RESOURCES. 68. ADMIN MOD. 5 = 3 digit score. Apr 25, 2012. This change follows the p/f change of USMLE Step 1. So we might have it in a couple days. 5% correct = 226 official score. ” This number indicates the percentage of examinees that scored at or below the examinee’s CBSE score. #1 · May 22, 2019. Based on that, you can calculate what you got. 2. For the NBME/CBSSA 30 to Step 1 score converter, click here. USMLE Step 3 Study Materials. 3-digit score scale has more possible score values than the equated percent correct score scale. I have started working on a calculator for predicting 3 digit score based off of total number of questions missed (% correct). Your score is 231. Correlation r = 1; R-squared = 1. TheIllusionist said: I got 244 on 19 and a 247 on the real thing. My 69% gave 97% COP. Aug 6, 2019. How much do 22 mistakes correlate to nbme 11 score? I scored a 209 on NBME 7 to start out. Feb 15, 2014 · Some of the disparity in your score is due to the way questions are written on NBME compared to Rx, Kaplan, UW, amboss, etc. There has been a lot of discussion on that, but personally if I had to take the exam in p/f, I would consider 70% correct as a safer margin for these nbmes. It features multiple-choice questions on content typically covered during the core clinical clerkships. No conversion is currently available because of the limited Predicted Step 1 Score for NBME (CBSSA) 30. 141. INSIGHTS is an online student dashboard, accessible via the MyNBMESM Examinee Portal, that contains official score feedback along with enhanced review options. This is NOT an estimation of the actual Step2 CK score; use the Step2 CK 2019 correlation survey and use this estimation in that survey. 0000937*A1^2+0. 63 mistakes in Nbme 10. The new system will show raw percent correct (140/200 questions shows up as 70%) adjusted for form difficulty, in addition to "probability of passing Step 1". Now to hope I don’t fold on test day lol. Scored 400. It is widely considered to be the most challenging NBME, and the best-fit line backs that up. To get a 250 on CBSSA 30, you could only miss 24 questions. If you are viewing this on the new Reddit layout, please take some time and look at our wiki (/r/step2/wiki) as it has a lot of valuable NBME 22 3 Digit Score Calculator. Found out online with that the conversion is %corrext X 184 x 1. Here's an update on the practice test correlations. (Because it's the only nbme with extended feedback) Number of Questions Corrected 3 Digit Score. #1. Just wanna make sure this as this is correlated to 216. May 8, 2018 · NBME/CBSSA Score: This ranges from 10 to 800, and is scaled to have a mean of 500 and standard deviation of 100. nique_d. 365 NBME 17: 1. However, NBME 13 is an outdated exam and really should not be used for anything other than seeing the questions. READ THE RULES BEFORE POSTING USMLE Step 2 CK is the second national board exam all United States medical students must take before graduating medical school. No offline conversion is currently available because of the limited availability of the form in My personal opinion: An estimate of the 196 score was around 65% correct in the past for these nbmes. 2) Provide affordable, effective medical education services for students preparing for their Step 1 exam, Step 2 exam, Step 3 exam and clerkship shelf exams. This range represents CBSE scores corresponding to Step 1 performance starting at the passing standard plus 2 standard errors of measurement. It measures the proportion of variation in the dependent variable that can be attributed to the independent variable. When will the new CCSE score reports be released? The new score reports will be released on December 5, 2022. I very much prefer the UW curve lol Nbme 12 score conversion. Taken March 2024. If you need to locate the approximate equivalent equated percent correct score for a 3-digit score that is not shown in the conversion table, you should use the score that corresponds to the next highest 3-digit score as the approximate equivalent The Comprehensive Clinical Science Self-Assessment is a practice test designed for students planning to take the USMLE Step 2 CK. Compare your score with a passing score of 196. Mar 5, 2015 · Step 1: 238 NBME 7 235 (5 weeks out) NBME 6 235 (4 weeks out) UWSA 1 251 (3 weeks out NBME 8 239 (2 weeks out) UWSA2 258 (6 days out) Old 120 87% (3 days out) New 120 80% (3 days out) Reddit predictor: 254 Step 2 CK : 254 Average of my two UWSAs. 30096*A1) Try it for any input from 200-800 and result will match 3-digit score provided in NBME provided sample performance chart. Take the other NBMEs and see how you do; personally I think 17 and 18 are the most predictive. Step 3 MTB Preventative med section is a helpful read a couple of days before. Reported scores range from 1-300 with a mean of 231 and a standard deviation of 20. 2 - (1. 226 (67 wrong) with "67% correct, 34% incorrect" (yea that's what it says online with the new exam insight details & question review), I counted 67 wrong and 133 correct. However, students often take this exam last, so it may only correlate well with the actual exam score because it is usually the most recent exam a student has taken before their test day. Will CCSEs still report a 3-digit score? Yes, the 3-digit score corresponding to the USMLE Step 2 CK score scale will be reported because Step 2 CK numeric scores are still reported. SAT SCORE CONVERSION TABLE Conversion Schemes İn Organic Chemistry Grade 12 Appendix I -Intravenous (Iv) To Oral (Po) Dose Conversion – Adults Examples Of İp Address To Netmask Conversion Work Heparin – Controlling The Conversion Relay Secular Enlightenment And Christian Conversion…İn Colonial India, 2007 To feel comfortable taking the exam you should aim for 80% correct on NBMEs and free 120s. I haven’t seen as much data on UWorld but I’d say 70-75% correct is very comfortable as well. X-axis is number of wrongs, Y-axis is estimated practice test score. Similarly, at its creation, the USMLE average was 200 with a std of 20. 3 digit score is around 215. 5%). Mar 28, 2020. The R-squared value R 2 is always between 0 and 1 inclusive. Perfect positive linear association. I know bec I took my nbmes online and the score calculation was exactly the same. 7-0. Nbme practice forms I have (blocks 1 through 4) are each 50 question. NBME 24 3 Digit Score Calculator. Ended up in the over 250+ range. Can someone please convert this into 3 digit scores. This number is difficult to convert back to a three-digit score like the old graded version of the exam, but a 50 percent likelihood of passing I took it offline, and scored 139/200 (69. can u tell about the correlation for score 300. UWSA 2 predicted me the best at 264. Notice that the conversions are approximate, and differ slightly from the real distribution of scores reported in the USMLE’s interpretation guidelines. your score out of 200; and 3. UW 90%, 65% average. Free120 (2 days before): 85%. 1231 x number of wrong questions) NBME 14 score = 299. The calculation is dead on. Just creating a thread to share scores and subsequently check scores after exams for future use. 00. Apr 3, 2019 · NBME 4 - 490. •. 32 NBME 18: 1. Since the examination proper is computerized and will take several hours, you must learn the basics firsthand with the help of Dr_Cat_Mom. 146 221. In addition to helping you gain a familiarity with NBME-style questions, the Comprehensive Basic Science So, to do the 2019 correlation, you need the practice test conversion. 16K subscribers in the Step3 community. SuccessfulActuator62 • 2 yr. Total 66. I hope this is helpful to you, and you can do this. In addition to helping you gain a familiarity with NBME-style questions, the Comprehensive Clinical Science Self UWSA2 was the closest score to my test, UWSA1 was 10 pts over my actual score and each NBME I took was about 20 points under my actual score. It may slightly differ from your actual NBME 23 3 Digit Score Calculator. r/Step2. Thank you! Did you ever find nbme 31 score converter. Also remember: the score these equations give is supposed to be used in the equations of the 2019 survey. My UWSA 1 and 2 were much more reflective of my actual score. As for offline correlation, I just need more non-malicious data. Sep 23, 2015 · For those that took NBME 6 or NBME 7 online, could you share: 1. Nbme 31 is the same length as the others. NBME 10 score conversion. This interactive dashboard enables users to view, filter and sort results across assessments. Nbme 22 3 digit score conversion . Was wondering if anyone knew how much % of passing that would be too. The methods for assigning final grades in clerkships for MS3 students in 2024-2025 academic year will utilize a multitiered grading system that requires students to meet minimum passing scores on major grading components (Clinical Assessment, NBME Subject Exam and OSCE). Aug 26, 2020 · NBME Questions type Form 18 Form 19 Form 20. Ischemicheart. 5%. In my experience, NBME 7 absolutely underpredicts your score. NBME # (6 or 7) 2. 11 Share. The P/F Era. Offline NBME Score Converter NBME 15 NBME 16 NBME 17 NBME 18 NBME 19 NBME 20 NBME 21 NBME 22 NBME 23 NBME 24 NBME 25 NBME 26 NBME 27 NBME 28 NBME 29 NBME 30 Convert it correlates to 215-216 ( by using reddits offline predictor) 1. Good luck! SUBJECTEXAMINATIONPROGRAM PSYCHIATRYEXAMINATION SCOREINTERPRETATIONGUIDE NBME®subjectexaminationsprovidemedicalschoolswithatoolformeasuringexaminees Dec 22, 2023 · For CBSSA/USMLE Step 1: the equated percent correct score. turkeygreen • 2 yr. Jul 1, 2017. NBME 14 -272 NBME 10-272 NBME 12-268 NBME 11-247 Taken in descending order over the last 3 weeks. They will give you a score as if you took the practice tests online. I scored in the low 260s for CK and my NBME 7 was in the mid 230s 2. UWSA2 was the closest score to my test, UWSA1 was 10 pts over my actual score and each NBME I took was about 20 points under my actual score. Got 370 (67% correct) on Form 5 taken 3 days prior to exam day 1, real score 211 on step 3. Learn more. You take the number correct (ex: 135/200), and multiply it by this ratio: NBME 12: 1. It says average is 500 with standard deviation of 100 (range 10 to 800), but doesn't give a correlation to the 3-digit USMLE score. r/step1. UWSA's and Free 120 usmle sample questions are better predictors. 97-98%. The points are exactly on the trend line. Please note: COMLEX-USA Level 1 transitioned to reporting only Pass/Fail scores as of May 10, 2022. I definitely saw quite a number of repeated questions on the actual step 2ck, like questions I’m pretty sure I’ve seen before word for word. ago. Tutors will hype the NBME's that way you can pay them big bucks to teach you NBME concepts/explanations. 25-30 New Nbme score thread and its accuracy. My score dropped a couple of points too on NBME 14. You can also calculate how many questions you got wrong based on your % score and input that into linear regressions formulas from NBME 25-30 and then calculate the average 3-digit score and then convert it to the Mar 25, 2015 · Reaction score. The actual average in a given year has tended to creep up and is usually somewhere in the low-to-mid 70s. Your number of incorrect answers does NOT directly correspond to a score, as the NBME tests have varying difficulty and thus scale the scores according to previous data from first-time Step 1 examinees. • 2 yr. The actual Step 1 exam is comprised of 7 sections of 40 question blocks, corresponding to 1 hour Nov 15, 2017 · Azete said: This is a normal percent conversion for the NBMEs as they are generally easier than the real test. Jan 13, 2020 · Approximate conversion between raw score and three digit score for USMLE Step 2 CK. From my understanding, nbme 5s average is 500 and the standard deviation is 100. Anyone with experience with the new NBME5 or should I take a UWSA tomorrow? Top. — Travis Benson, MD (@TravisABenson) February 13, 2021 •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. Multiply your score out of 200 with the following conversion factors. With old forms being discontinued, form 23 will only grow in popularity moving forward. I took it last week. NBME practice exams are comprised of 4 sections composed of 50 questions each. #4. Not exact number. If you want raw equation of NBME provided sample performance chart, then here it is: =INT (70. Keep in mind, this is not recalculated every year. With +/- 2,based on the experience of previous nbme 4 taker. Hi, i just did my nbme 12, got 57 qs wrong. 1. The exact amount varied a lot. With old forms being discontinued, form 22 will only grow in popularity moving forward. 66 which isn't far from 215 I got on UWSA1 . The old graphs made by the 2-3 people over the last 4-5 years have very helpful for the range of values that they were covering (ie the points plotted). -1. Jul 31, 2018 · UWorld Self Assessment Exam 2 best correlates with exam score on test day according to the aforementioned data analysis. Here are my scores in order of completion: New free 120 (23 days out): ~78% UWSA1 (19 days out): 256 NBME 7 (10 days out): 231. 31 But again, it's just an estimation. READ THE RULES BEFORE POSTING! // USMLE Step 1 is the first national board exam all United States medical students must take before graduating medical school. NBME 14 = 260 NBME 13 =263 (20 days back) UWSA 1 = 261 ( 30 days back) Post your NBME 14 scores along with any other assessments you took. So beware of that Reply reply Ok-Layer-6568 • score converter is trash for 12 says like 85-86% correct is 260 even What scores on the equated percent correct scale correspond to the USMLE Step 1 low-pass range? The low-pass range goes from 62 to 68 on the equated percent correct scale. UW2 (2 days before): 267. As always, please reach out with questions and corrections. the predicted CK score This would help people that can't afford NBME 6 and 7 to get an estimate of their CK score. 92. So the above ^ 66 wrong and 227 checks out, just know its not always a one to one conversion. gealvarez • 1 yr. 1522 x (number of your mistakes) + 276. NBME 20 is a tough exam and the curve is also tough. Tags: Certification Feb 8, 2024 · Newly posted NBME® Subject Exam score feedback is now available in INSIGHTSSM. It simulates the USMLE Step 1, Step 2 CK, or Step 3 exam in terms of the question style and user interface. 29 NBME 13: 1. There is a mega thread on this sub. And thus my correct score is out of 50 (ex 36/50), how do i convert that to approximate subject exam score. There is a formula using your number of incorrects to calculate score. With old forms being discontinued, form 20 will only grow in popularity moving forward. Now the average is >220. It then provides an estimated range of the corresponding USMLE Step 1, Step 2 CK, or Step 3 score. Does anyone know about NBME 5 score correlation with actual step 3 score I just gave the NBME and am unable to understand my How much does 81. 15 points. 83%, pulled a 262. How much did u score? 50 wrongs = ??? . 5 percentage or 37 mistakes correlate to in NBME 11? please reply. Basically, [#wrongs] + A => [Practice test score] [Practice test score] + B => [estimated Step2 score] So, to answer your question directly, you absolutely can put in your wrongs into these equations. I'm taking Step 3 on the next 2 saturdays, and I took the new NBME 5 today. Go to Step2. Felt really unsure going out of the exam. Couple of points give and take. It features multiple-choice questions on content typically covered during basic science medical education courses. Happy studying. 73% on free120, 251 on step. Hi whats the 3digit score for 140/200 on NBME 22? Thank you so much! Locked post. Step 3s average is 228 and the SD is 15. 12. Study methods. I made 32 mistakes on nbme 23. and b = -12,3 +/- 4,1. The chart below represents the distribution of Step 1 scores for examinees from US and Canadian medical schools taking Step 1 for the first time between January 1, 2018 and December 31, 2018. NBME CBSE changed the scoring system. 5% 640 255 NBME 18: 92% 640 257 NBME 17: 96% 670 263 Exams taken 5-7 days apart for the most part. Got my score report and have no idea what it means. Work on your weak points and get those scores up—you’re not all that far off! I’m on my second run through uworld with an average of 76%. UWSA2 (4 days out): 258 STEP 2 CK real deal: 259. The Comprehensive Clinical Medicine Self-Assessment is a practice test designed for students planning to take the USMLE Step 3. CBSE Score Ranks CBSE Score Ranks 254 and above 5199 185 251 99 182 47 The NBME Free 120, also known as USMLE Free 120, is a set of 120 sample questions released every year by NBME. The Clinical Mastery Series score reports include the following: A score interpretation guide with a conversion table that translates an assessment score to an approximated total score of the Subject Exam score scale; The ability to review answer explanations for all items; Longitudinal feedback provided when multiple assessments are completed Background. 5% correct ! Anyone here who could help me with score conversion? i just did nbme 10. with m = 1,428 +/- 0,025. Great job, I actually made that initial post (deleted my account because people were bombarding me with questions on how to read a simple equation, ffs) and i had plans to turn the data into a page where users can just enter the numbers and it would show. For my friends, it always underpredicted. UWSA1 279 (93%), UWSA2 (95%) 275 for reference. 84% on it and 257 on the real exam 3 days later. Percentile The #1 social media platform for MCAT advice. 41 NBME 19: 1. 75% 249 . Sort by: Add a Comment. No offline conversion is currently available because of the limited availability of the form in The following equation is based upon real results from the NBME 15 correlated with the number of correct questions (NBME used to report that number for some time): y = mx + b. Share May 22, 2019 · 5 posts · Joined 2014. Step 1. Also, remember: These are practice test score correlations. bf st tp hg bc uw en xu vy um