TABLE II.
Odds Ratios (OR) and 95% Confidence Intervals (95% CI) for Gallbladder Cancer Mortality Risk in Relation to Selected Factors in 333 Counties in Chile, 1985–2002. Multivariable Logistic Regression.
| Characteristics | No. Counties |
% of counties with RR>1a |
ORb (95% CI) | p | |
|---|---|---|---|---|---|
| Geographic Location | North-Coast | 28 | 11 | 1.0 | |
| North-Inland | 101 | 37 | 10.13 (2.4 – 42.2) | 0.001 | |
| South-Coast | 67 | 43 | 5.19 (1.1 – 24.5) | 0.04 | |
| South –Inland | 137 | 67 | 26.10 (6.0 – 114.2) | <0.001 | |
| Mapuche population | Low (<3.7%) | 227 | 41 | 1.0 | |
| High (≥3.7%) | 106 | 64 | 3.92 (1.8 – 8.7) | 0.001 | |
| Typhoid incidence rated |
Low (<7.2) | 281 | 44 | 1.0 | |
| High (≥7.2) | 52 | 69 | 2.92 (1.2 – 6.9) | 0.014 | |
| Poverty | Low | 105 | 25 | 1.0 | |
| Medium | 192 | 56 | 3.20 (1.6 – 6.4) | 0.001 | |
| High | 36 | 78 | 5.05 (1.6 – 15.9) | 0.006 | |
| Urbanization | Low (<40%) | 121 | 45 | 1.0 | |
| Medium (40–75%) | 101 | 67 | 5.29 (2.5 – 11.2) | <0.001 | |
| High (>75%) | 111 | 36 | 8.01 (3.4 – 18.7) | <0.001 | |
| Cholecistectomy c | High (>80%) | 115 | 31 | 1.0 | |
| Medium (50–80%) | 130 | 50 | 2.01 (1.0 – 4.0) | 0.048 | |
| Low (<50%) | 88 | 68 | 3.86 (1.5 – 10.1) | 0.006 | |
| Hospital care for gallbladder diseases d |
High | 34 | 21 | 1.0 | |
| Medium | 188 | 47 | 5.16 (1.7 – 15.8) | 0.004 | |
| Low | 111 | 59 | 14.25 (4.2 – 48.7) | <0.001 | |
a
RR: relative risk of gallbladder cancer > 1 from the Poisson Regression Analysis
b
Odds ratios for comparisons between two strata within each characteristics, adjusted for geographical location
c
number of major surgery per 100 gallbladder diseases hospital discharge
d
Ratio of gallbladder diseases hospital discharges over gallbladder cancer deaths