Introduction to EpidemiologyAn introduction to the principles, methods and application of epidemiology for improving health and survival. |
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Activity age-specific allocation anaemia analysis analytical appropriate assess attributable fraction attributable risk breast cancer calculated case-control study Chapter cholera clinical cohort study compared comparison group confidence interval cross-sectional study deaths detected diabetes diagnosed ecological study effect efficacy epidemiological study estimate evaluation example exercise regularly exposed exposure and outcome Figure follow-up frequency health outcomes hospital household identify Ilona Carneiro incidence rate ratio increase infants information bias intervention study investigators lung cancer malaria measure of association monitoring mortality rates number of individuals odds ratio osteoporosis outcome of interest P-value patients person-time at risk placebo population attributable prevalence ratio prevention programme proportion public health random reduce relative risk risk factor risk ratio sample screening method selection bias smoking Source specific standard statistical study design study participants study population surveillance Table time-period tion total number trial tuberculosis unexposed group vaccine variables women World Health Organization