Table 2. Mixed-effects negative binomial regression analysis of correlates of urban-to-rural overall mobility (left columns) and mobility to high-risk areas (right columns), in the study population of Mâncio Lima, northwestern Brazil (n = 1,903).
| Overall mobility (total number of overnights outside the town within the past 12 months) | Mobility to high-risk areas (total number of overnights in localities with an API greater than that of the town of Mâncio Lima) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unadjusted model | Adjusted model | Unadjusted model | Adjusted model | |||||||||
| IRRa | (95% CI)b | P | IRRa | (95% CI)b | P | IRRa | (95% CI)b | P | IRRa | (95% CI)b | P | |
| Age | ||||||||||||
| 0–5 | Reference | Reference | Reference | Reference | ||||||||
| 06–15 | 1.31 | (0.7–2.3) | 0.362 | 1.24 | (0.7–2.2) | 0.463 | 1.01 | (0.4–2.3) | 0.990 | 0.91 | (0.4–2.0) | 0.821 |
| 16–40 | 3.52 | (2.1–6.0) | <0.0001 | 2.73 | (1.5–4.8) | 0.001 | 2.06 | (1.0–4.3) | 0.052 | 1.61 | (0.7–3.6) | 0.243 |
| 41–60 | 4.14 | (2.2–7.8) | <0.0001 | 2.42 | (1.2–4.9) | 0.015 | 1.75 | (0.7–4.4) | 0.237 | 1.06 | (0.4–2.9) | 0.911 |
| > 60 | 1.27 | (0.6–2.8) | 0.566 | 0.97 | (0.4–2.2) | 0.938 | 0.72 | (0.2–2.4) | 0.595 | 0.48 | (0.1–1.7) | 0.256 |
| Gender | ||||||||||||
| Female | Reference | Reference | Reference | Reference | ||||||||
| Male | 2.43 | (1.8–3.3) | <0.0001 | 1.94 | (1.4–2.7) | <0.0001 | 3.04 | (2.00–4.7) | <0.0001 | 2.76 | (1.7–4.6) | <0.0001 |
| Work status | ||||||||||||
| Does not work | Reference | Reference | Reference | Reference | ||||||||
| Formal employee | 1.59 | (0.9–2.8) | 0.114 | 0.97 | (0.5–1.8) | 0.917 | 1.87 | (0.8–4.6) | 0.175 | 1.55 | (0.6–4.0) | 0.363 |
| Informal employee | 4.26 | (2.9–6.2) | <0.0001 | 1.70 | (1.0–2.8) | 0.031 | 3.32 | (1.9–5.7) | <0.0001 | 1.46 | (0.7–3.0) | 0.302 |
| Employer | 1.66 | (0.1–22.0) | 0.702 | 0.65 | (0.0–9.4) | 0.751 | 4.65 | (0.2–130.1) | 0.366 | 2.85 | (0.1–102.2) | 0.566 |
| Wealth indexc | ||||||||||||
| Poorest | Reference | Reference | Reference | Reference | ||||||||
| Intermediate | 0.53 | (0.3–1.0) | 0.041 | 0.60 | (0.3–1.1) | 0.103 | 3.03 | (1.0–9.4) | 0.056 | 2.76 | (1.0–7.8) | 0.055 |
| Least poor | 0.53 | (0.3–1.0) | 0.047 | 0.51 | (0.3–1.0) | 0.037 | 1.74 | (0.6–5.4) | 0.335 | 1.14 | (0.4–3.2) | 0.805 |
| Fishing | ||||||||||||
| No | Reference | Reference | Reference | Reference | ||||||||
| Yes | 3.60 | (2.4–5.4) | <0.0001 | 1.93 | (1.3–3.0) | 0.003 | 2.62 | (1.4–4.9) | 0.003 | 1.39 | (0.7–2.7) | 0.322 |
| Second residence | ||||||||||||
| No | Reference | Reference | Reference | Reference | ||||||||
| Yes | 13.3 | (7.3–24.4) | <0.0001 | 15.46 | (8.3–28.8) | <0.0001 | 60.18 | (18.3–197.8) | <0.0001 | 60.99 | (19.7–188.4) | <0.0001 |
aIRR = incidence rate ratio. Note that “incidence” here refers to the total number of overnights over 12 months.
bCI = confidence interval.
cWealth Index terciles.