Table 4. Suicide IRR for BFP participation in the matched and original cohorts by sex and age groups from 2004–2015.
| Poisson with no adjustment | Poisson with adjustment | Poisson with IPTW | Poisson after matching | |
|---|---|---|---|---|
| IRR (95%CI) | IRR1 (95%CI) | IRR2 (95%CI) | IRR3 (95% CI) | |
| Sex | ||||
| Male | 0.49 (0.47, 0.50) | 0.47 (0.45, 0.48) | 0.46 (0.44, 0.48) | 0.46 (0.44, 0.49) |
| p-Value | <0.001 | <0.001 | <0.001 | <0.001 |
| N | 34,745,152 | 28,982,461 | 28,982,461 | 34,603,906 |
| Female | 0.42 (0.41, 0.44) | 0.34 (0.33, 0.36) | 0.36 (0.33, 0.38) | 0.35 (0.31, 0.39) |
| p-Value | <0.001 | <0.001 | <0.001 | <0.001 |
| N | 41,787,006 | 33,784,505 | 33,784,505 | 35,103,410 |
| p-Value | <0.001 | <0.001 | <0.001 | <0.001 |
| Age groups | ||||
| 10–24 years old | 0.47 (0.45, 0.49) | 0.43 (0.41, 0.45) | 0.45 (0.43, 0.48) | 0.40 (0.37, 0.44) |
| p-Value | <0.001 | <0.001 | <0.001 | <0.001 |
| N | 31,667,501 | 25,342,127 | 25,342,127 | 34,559,050 |
| 25–59 years old | 0.53 (0.52, 0.55) | 0.41 (0.40, 0.43) | 0.41 (0.40, 0.43) | 0.40 (0.38, 0.43) |
| p-Value | <0.001 | <0.001 | <0.001 | <0.001 |
| N | 37,423,999 | 30,833,453 | 30,833,453 | 31,241,852 |
| 60 years old or older | 0.71 (0.64, 0.79) | 0.53 (0.47, 0.61) | 0.52 (0.46, 0.60) | 0.56 (0.46, 0.68) |
| p-Value | <0.001 | <0.001 | <0.001 | <0.001 |
| N | 5,301,001 | 4,854,357 | 4,854,357 | 2,112,096 |
1IRR estimated using Poisson regression, adjusted for age, education level, unemployment, living alone, location of residence, and household characteristics, as a proxy for socioeconomic status (water supply, waste, construction materials, sanitation, and crowding), and year of cohort baseline registration.
2IRR estimated using Poisson regression, accounting for the IPTW, given age, sex, education level, unemployment, living alone, location of residence, and household characteristics, as a proxy for socioeconomic status (water supply, waste, construction materials, sanitation, and crowding), and year of cohort baseline registration.
3IRR estimated using Poisson regression after PS matching pairs were PS matched for age, sex, education level, unemployment, living alone, location of residence, and household characteristics, as a proxy for socioeconomic status (water supply, waste, construction materials, sanitation, and crowding), and year of cohort baseline registration.
BFP, Bolsa Família programme; IPTW, inverse probability of treatment weighting; IRR, incidence rate ratio.