Socioeconomic variables and association with tuberculosis incidence rate in Brazil (n=3311 municipalities†)
| Variable‡ | Mean (SD) | Median (IQ25%–IQ75%) | RIIR (95% CI)§ | (Adjusted) RIIR (95% CI)§ |
| M-HDI | 0.7 (0.1) | 0.7 (0.6–0.7) | −4.8 (−36.9 to 43.7) | |
| Average household income per capita (US$) | 280.3 (143.8) | 257.9 (155.6–372.8) | −0.0 (−0.0 to −0.0)* | |
| GDP per capita (US$) | 7510.4 (8630.3) | 5555.2 (2909.4–9 091.2) | 0.0 (−0.0 to 0.0) | |
| Extremely poor (%) | 11.4 (11.7) | 6.5 (1.6–19.1) | −0.0 (−0.3 to 0.2) | |
| Poor (%) | 23.4 (18.0) | 18.5 (6.9–38.8) | 0.1 (–0.0 to 0.3) | |
| Vulnerable to poverty (%) | 44.1 (22.7) | 42.6 (23.3–65.6) | 0.2 (0.0 to 0.3)* | |
| Gini coefficient (%) | 51.0 (6.5) | 51.0 (46.7–55.2) | 0.8 (0.3 to 1.2)* | |
| Unemployment rate (%) | 6.7 (3.7) | 6.3 (4.2–8.6) | 5.0 (4.2 to 5.8)* | 3.9 (3.0 to 4.7)* |
| Illiteracy in the population with ≥18 years (%) | 17.2 (10.8) | 13.9 (8.1–26.4) | −0.4 (−0.6 to −0.1)* | |
| Illiteracy in the population with ≥15 years (%) | 15.6 (9.8) | 12.9 (7.2–23.8) | −0.4 (−0.7 to −0.1)* | |
| Household crowding (%)¶ | 26.4 (13.1) | 24.7 (16.6–33.8) | 1.2 (1.0 to 1.4)* | 0.8 (0.6 to 1.1)* |
| Infant mortality rate (no of deaths in the first year of life per 1000 live births) | 19.3 (7.2) | 17.0 (13.7–24.1) | 0.1 (−0.3 to 0.5) | |
| Life expectancy at birth (years) | 73.1 (2.7) | 73.4 (71.1–75.2) | −0.9 (−1.9 to 0.2) |
*P<0.05.
†Municipalities with an annual variation in TB incidence rate between −8% and 8% and at least one new TB case in 2015.
‡Variables measured in the last census (2010).
§The association measure represents the RIIR ((IRR-1)x100), adjusted for the population size of the municipality.
¶Proportion of the population living in households with more than two people per room.
GDP, gross domestic product; IRR, incidence rate ratio; M-HDI, Municipal Human Development Index; RIIR, relative increment in the incidence rate; TB, tuberculosis.