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Keyword
- Bias1
- Biostatistics1
- Case-control study1
- Clustering1
- Cohort study1
- Design Effect1
- Household study1
- Human trafficking1
- Prevalence1
- Probability Proportional to Estimated Size1
- Probability model1
- Proportional Allocation1
- Sampling1
- Sampling Weights1
- Stratification1
- Stratified Sampling1
- Sudan1
- Test-negative study1
- Trachoma1
- reinfection1