Risk factor analysis for gallstone disease among individuals from Las Pampas de San Juan de Miraflores, Lima, Peru, 1997. The odds ratio (OR) of each risk factor was obtained from a multivariate regression model that contains all the risk factors listed in this table
| Regression analysis | ||||
|---|---|---|---|---|
| Risk factor | n |
Gallstone disease (%) | OR | (95% CI) |
| Age (years) | ||||
| 15–34 | 504 | 5.56 | 1.00 | |
| 35–54 | 566 | 12.90 | 1.97 | (1.35–2.86) |
| 55+ | 443 | 26.64 | 5.25 | (3.59–7.68) |
| Sex, contraceptive use, parity | ||||
| Male | 497 | 10.66 | 1.00 | |
| Female, never used, <4 | 469 | 8.32 | 1.24 | (0.86–1.78) |
| Female, never used, ⩾4 | 505 | 23.76 | 2.04 | (1.54–2.69) |
| Female, ever used, <4 | 28 | 14.29 | 2.98 | (1.07–8.32) |
| Female, ever used, ⩾4 | 14 | 21.43 | 3.77 | (1.10–12.83) |
| Body mass index (kg/m2) | ||||
| 16.48–24.11 | 504 | 9.52 | 1.00 | |
| 24.12–27.56 | 533 | 13.13 | 1.28 | (0.96–1.70) |
| 27.57–43.74 | 476 | 21.22 | 1.97 | (1.47–2.63) |
| Alcohol consumption | ||||
| None | 958 | 15.87 | 1.00 | |
| At least once a year | 263 | 12.55 | 0.89 | (0.66–1.21) |
| At least once a month | 292 | 11.64 | 1.04 | (0.80–1.33) |
| Educational level | ||||
| Up to high school | 196 | 27.04 | 1.00 | |
| High school or beyond | 1317 | 12.60 | 0.94 | (0.70–1.27) |
| Constipation | ||||
| Not constipated | 1188 | 13.80 | 1.00 | |
| Constipated | 325 | 16.92 | 1.24 | (0.95–1.62) |
| Place of birth | ||||
| Costa | 551 | 13.97 | 1.00 | |
| Sierra migrants | 962 | 14.76 | 0.74 | (0.58–0.94) |