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community medicine biostatistics public health systematic review statistics metaanalysis mbbs psm research spm hypothesis testing tests of hypothesis epidemiology india research methodology nonparametric test hypothesis test statistical tests inferential statistics critical appraisal health literature medical literature case control study undergraduate level healthcare prevention national health programmes health standardization population tests of significance probability statistical test t test chi square test age standardization health system confidence intervals evidence based medicine water purification noncommunicable disease control p value study designs health measurement results health planning forest plot review scale development spearman correlation food poisoning gastroentritis food borne disease food safety district health plan cirrhosis dhap disability adjusted life years daly alcoholic liver disease water pollution environment and health gbds burden of disease estimation rabies nacp national programmes hiv/aids medical sociology basic concepts spotters right to health ecology and health development and health ecology of health phc health plan spectrum of health pqli hdi concept of well being age pandemic health administration inventory management health management vaccine uip measles sociology doctor patient relationship health legistation urban health ebola outbreak evd ebola virus disease national urban health mission national health mission urbanization urbanisation bacterial food poisoning environment health policy manpower management cohort study management programme evaluation subcentre evaluation iphs theories of disease causation association causation idsp outbreak investigation integrated diseases surveillance project africa epidemic ebolavirus urban poor heterogeneity science bias phi coefficient point biserial correlation pearson correlation small dataset kolmogorov smirnov test shapiro wilk test normality normal distribution friedman test kruskal wallis test goodness of fit kolmogorov smirnov ks test stratified analysis stratification preventive medicine mantel haenszel test effect modification knowledge synthesis scoping review registration demography survey data big data census standardised mean difference mean difference smd hedge's g cohen's d graphs tables funnel plot dispersion moderator analysis galbraith plot cochran q i square confounding incidence ratio crude death rate prevalence proportion undergraduate mgr university curriculum time management study skills malaria chicken pox small pox health care delivery chlorination large scale disinfection slow sand filter sand filtration rapid sand filter diabetes adjustment checklists ebm student's t test variables distributions laws of probability sample type 2 error power type 1 error nmaster software sample size descriptive studies cdc analytical studies determinants of health dimensions of health positive health rate nutrition