Level of U (i) | Population number (m i ) | U is associated with neither E nor D | U is not associated with E | U is not associated with D | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Exposure prevalence (p i ) | Disease risk among the unexposed () | Relative risk () | Exposure prevalence (p i ) | Disease risk among the unexposed () | Relative risk () | Exposure prevalence (p i ) | Disease risk among the unexposed () | Relative risk () | ||
1 | 3,000 | 0.40 | 0.30 | 1.50 | 0.40 | 0.40 | 1.54 | 0.80 | 0.30 | 1.50 |
2 | 2,500 | 0.40 | 0.30 | 1.50 | 0.40 | 0.30 | 1.52 | 0.60 | 0.30 | 1.50 |
3 | 2,500 | 0.40 | 0.30 | 1.50 | 0.40 | 0.25 | 1.45 | 0.40 | 0.30 | 1.50 |
4 | 2,000 | 0.40 | 0.30 | 1.50 | 0.40 | 0.20 | 1.42 | 0.20 | 0.30 | 1.50 |
Total | 10,000 | Crude relative risk (crude RR) = 1.50 | Crude relative risk (crude RR) = 1.50 | Crude relative risk (crude RR) = 1.50 | ||||||
Standardized relative risk (SRR) = 1.50 | Standardized relative risk (SRR) = 1.50 | Standardized relative risk (SRR) = 1.50 |