Age stratified prevalence of gallstone disease in males. Rates were also stratified by geographical region: coastal natives, Sierra migrants stratified by time since migration, and Andean villages. Rate equals gallstone disease cases per 100 persons (n=number of people examined for gallstone disease)
| Age (years) | Males | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Coastal natives | Sierra natives <10 y migration | Sierra natives ⩾10 y migration | Andean villages | ||||||||||
| n | % Disease | n | % Disease | n | % Disease | n | % Disease | ||||||
| 15–24 | 46 | 0.0 | 7 | 0.0 | 17 | 0.0 | 57 | 0.0 | |||||
| 25–34 | 25 | 3.8 | 11 | 18.2 | 36 | 2.8 | 69 | 1.5 | |||||
| 34–44 | 26 | 10.3 | 5 | 0.0 | 53 | 5.7 | 61 | 4.9 | |||||
| 45–54 | 21 | 19.2 | 2 | 0.0 | 63 | 7.9 | 65 | 9.2 | |||||
| 55–64 | 21 | 22.2 | 4 | 0.0 | 57 | 10.5 | 40 | 20.0 | |||||
| 65+ | 9 | 30.8 | 7 | 42.9 | 66 | 21.2 | 36 | 38.9 | |||||
| Total | 167 | 11.4 | 36 | 13.9 | 292 | 9.9 | 328 | 9.8 | |||||
| Age adjusted rates (95% CI) | 7.0 (3.1–10.9) | 4.8 (0.0–9.9) | 3.7 (1.5–5.9) | 4.0 (2.2–5.9) | |||||||||