Biostatistics Indian Medical PG Flashcards - Medical Study Cards
Master Biostatistics with OnCourse flashcards. These spaced repetition flashcards are designed for medical students preparing for NEET PG, USMLE Step 1, USMLE Step 2, MBBS exams, and other medical licensing examinations.
Biostatistics Flashcard Deck - 10 Cards
Flashcard 111: Formula for **Diagnostic Accuracy** of a test
Answer: (True Positives + True Negatives) / Total population
Alternatively: (TP + TN) / (TP + TN + FP + FN)
Extra: Diagnostic accuracy represents the proportion of all test results (both positive and negative) that are correct.
Flashcard 112: median=40
mean=20
Mode=
Answer: Mode=80
mode=3 median - 2 mean
Extra:
Flashcard 113: probability=0.2
odds=
Answer: 0.25
Extra:
Flashcard 114: c65872b736324b578b20a22eef5c027a-ao-2
Answer: tests of significance
Extra:
Flashcard 115: _____ sampling is done in large, geographically dispersed populations (e.g., for WHO EPI coverage)
Answer: Cluster
Extra: Cluster sampling is used when the population is large and spread over a wide area, making it difficult or impossible to obtain a complete sampling frame of all individuals. In this method, the population is divided into 'clusters' (e.g., villages or wards), and a random sample of these clusters is selected.
The WHO EPI (Expanded Programme on Immunization) 30x7 cluster sampling is a classic example.
Flashcard 116: _____ analysis method is preferred to interpret RCT
Answer: intention to treat
Extra:
Flashcard 117: formula for false negative error rate(FNER)
Answer: Fn/Fn+Tp
Extra:
Flashcard 118: Annual growth rate (natural growth rate) of India is _____% (SRS 2020)
Answer: 1.35
Extra: As per Sample Registration System (SRS) 2020 data, the Natural Growth Rate of India is 13.5 per 1000 (1.35%).
As per Census 2011, the Annual Growth Rate was 1.64%.
Flashcard 119: _____ is the most robust measure of central tendency
Answer: Median
Extra: The median is considered the most robust measure of central tendency because it is not influenced by extreme values (outliers).
Flashcard 120: For applying Z-test,
\(Z = \) _____
Now to test significance,
_____
or,
\(Z=\) _____, where s = _____
If _____ at given level of significance, then the observed difference is said to be statistically _____ (_____ is rejected in favor of _____)
Answer: \(\frac {Observed \ difference \ between \ two \ sample \ means}{SE \ of \ difference \ between \ two \ sample \ means}\)
Extra:
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