सामुदायिक चिकित्सा – Community Medicine MCQ
सामुदायिक चिकित्सा – MD/MS प्रवेश
Community Medicine · MECEE-PG – MD/MS/MDS Entrance · ४१० प्रश्न
४१० प्रश्न उपलब्ध। मोड छान्नुहोस्:
सामुदायिक चिकित्सा: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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Perinatal mortality includes:
सही उत्तर: घ) Late fetal deaths (stillbirths) and early neonatal deaths in the first week
Perinatal deaths comprise stillbirths (by the usual definition, from 28 weeks of gestation) plus deaths in the first 7 days of life.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The denominator used for calculating the infant mortality rate is:
सही उत्तर: ख) Number of live births in the year
IMR = infant deaths (under 1 year) in a year ÷ live births in the same year × 1000.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a population, 30% are aged 0–14 years, 65% are aged 15–64 years and 5% are aged 65 years and above. The total dependency ratio is approximately:
सही उत्तर: क) 54
Dependency ratio = (0–14 + 65+) ÷ (15–64) × 100 = (30 + 5) ÷ 65 × 100 ≈ 54.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Immunisation coverage surveys recommended by WHO commonly use which sampling method?
सही उत्तर: ग) Cluster sampling
The WHO EPI coverage survey has traditionally used a 30-cluster design, selecting clusters by probability proportional to size and then households within clusters.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The most appropriate diagram for showing the frequency distribution of a continuous variable such as height is a:
सही उत्तर: घ) Histogram
A histogram uses adjacent rectangles whose areas represent frequencies of class intervals of continuous data.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The value of the correlation coefficient (r) always lies between:
सही उत्तर: ग) −1 and +1
r ranges from −1 (perfect negative) through 0 (no linear relationship) to +1 (perfect positive correlation).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The statistical power of a study is equal to:
सही उत्तर: क) 1 − β
Power is the probability of detecting a true effect (correctly rejecting a false null hypothesis), i.e. 1 − β; it increases with sample size.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A type I (alpha) error occurs when the investigator:
सही उत्तर: ख) Rejects a null hypothesis that is actually true
Type I error is a false positive conclusion, its probability being the significance level α; type II error (β) is failing to detect a true difference.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Blood pressure is measured in the same patients before and after a drug. The appropriate test to compare the means is the:
सही उत्तर: क) Paired t-test
Measurements on the same individuals are dependent, so the paired t-test analyses the within-person differences.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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To compare the proportion of smokers between men and women (categorical data), the appropriate test is the:
सही उत्तर: ख) Chi-square test
The chi-square test compares proportions or frequencies of categorical variables between groups; t-tests and ANOVA compare means.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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