High Yield Public Health Review | USMLE Step 1 & Step 2CK

This is a high-yield review of biostats & public health for Step 1 and Step 2 CK. We discuss study design, measures of association, confidence intervals, p-values, and bias.

We cover the understanding of each concept so you can be prepared for any style of question that you come across. Keep in mind, we do a more brief, rapid review style discussion of these topics in the internal medicine review (linked below).

Time stamps:
Study design - 0:17
Measures of association - 13:09
Statistical tests - 15:28
Confidence intervals & p-values - 18:00
2x2 tables - 22:44
Plots & graphs - 29:41
Bias - 33:57

Here are links to other shelf review videos we've covered:

High yield family medicine review –

High yield surgery review -

High yield OB/GYN review -

High yield internal medicine review -

High yield pediatrics review -

High yield psychiatry review -

Downloadable PDFs of the slides can be found at the site below:

[MQLin]

I love how you explained things in this video in such layman's terms (as you also do in other videos)!

[isangbede]

Always coming through. Thanks, Dr. Tim

[ozgekadirhan]

I will take the exam monday so the review really really help me.... thanks a lot!

[antoniotiger]

You have been great in explaining the stuff but I am a bit confused with the naming of boxes as true negative at 23 min 40 sec mark as disease positive and disease negative along with test + and test - .This will give us following results.
a=TP
b=FP
c=FN
d= TN according to the 2x2 table interpretation.
Please clarify that for me.

[hubby_medical]

Can you do a part 2, where you include things like Cost Benifit analysis and related topics? (Sensitivity analysis, Cost utility, QALY, DALY, etc...)

[joy]

Thaaank u aloooot Dr. Tim.. plz continue adding thoes amazing videos, if u can make a separate video of Abstracts and Drug ads, as most of us struggling with thoes type of Qs.

[jfm.d]

Your specificity formula is wrong. It’s TN/(TN+FP) or d/(b+d)