Age stratified prevalence of gallstone disease in females. 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) | Females | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Coastal natives | Sierra natives <10 y migration | Sierra natives ⩾10 y migration | Andean villages | ||||||||||
| n | % Disease | n | % Disease | n | % Disease | n | % Disease | ||||||
| 15–24 | 132 | 0.0 | 21 | 4.8 | 41 | 4.9 | 120 | 5.8 | |||||
| 25–34 | 72 | 9.7 | 21 | 14.3 | 88 | 11.4 | 157 | 15.9 | |||||
| 34–44 | 81 | 17.3 | 16 | 6.3 | 134 | 6.7 | 139 | 21.6 | |||||
| 45–54 | 49 | 26.5 | 8 | 37.5 | 95 | 17.9 | 67 | 29.9 | |||||
| 55–64 | 38 | 36.8 | 4 | 50.0 | 92 | 27.2 | 48 | 35.4 | |||||
| 65+ | 27 | 37.0 | 14 | 7.1 | 90 | 33.3 | 50 | 40.0 | |||||
| Total | 399 | 14.5 | 84 | 13.1 | 540 | 17.2 | 581 | 20.5 | |||||
| Age adjusted rates (95% CI) | 11.6 (8.5–14.7) | 12.2 (5.4–19.1) | 9.4 (6.4–12.5) | 16.5 (13.6–19.5) | |||||||||