Table 3 Crude and multivariable associations of family income (quintiles) with delivery outcomes among four birth cohort studies in Pelotas
From: LBW and IUGR temporal trend in 4 population-based birth cohorts: the role of economic inequality
Models | Pelotas 1982 | Pelotas 1993 | Pelotas 2004 | Pelotas 2011 | |
|---|---|---|---|---|---|
Slope index of inequality: absolute difference in health status between those at the bottom and those at the top of the income hierarchy (95 % CI) | |||||
Low Birthweight | Raw | 0.088 [0.063, 0.113] | 0.049 [0.022, 0.077] | 0.077 [0.0463, 0.108] | 0.056 [0.028, 0.083] |
Adjusted (*) | 0.085 [0.049, 0.121] | 0.013 [-0.018, 0.045] | 0.059 [0.022, 0.095] | 0.018 [-0.015, 0.050] | |
Small for the Gestational Age | Raw | 0.153 [0.117, 0.189] | 0.084 [0.046, 0.121] | 0.099 [0.062, 0.136] | 0.050 [0.025, 0.076] |
Adjusted (*) | 0.144 [0.092, 0.197] | 0.060 [0.017, 0.103] | 0.071 [0.028, 0.114] | 0.048 [0.018, 0.078] | |
Relative index of inequality: OR for each outcome comparing those at the bottom to those at the top of the income hierarchy (95 % CI) | |||||
Low Birthweight | Raw | 3.29 [2.34, 4.63] | 1.83 [1.30, 2.56] | 2.60 [1.77, 3.82] | 1,78 [1.33, 2.37] |
Adjusted (*) | 3.06 [1.89, 4.95] | 1.18 [0.81, 1.72] | 2.09 [1.33, 3.27] | 1.20 [0.86, 1.68] | |
Small for the Gestational Age | Raw | 3.49 [2.59, 4.72] | 1.88 [1.41, 2.49] | 2.59 [1.82, 3.70] | 1.83 [1.35, 2.50] |
Adjusted (*) | 3.12 [2.04, 4.79] | 1.57 [1.14, 2.16] | 1.98 [1.31, 2.98] | 1.78 [1.24, 2.55] | |
Small for Gestational Age | Crude | 3.49 (2.59, 4.72) | 1.88 (1.41, 2.49) | 2.59 (1.82, 3.70) | 1.83 (1.35, 2.50) |
Adjusted | 3.12 (2.04, 4.79) | 1.57 (1.14, 2.16) | 1.98 (1.31, 2.98) | 1.78 (1.24, 2.55) | |