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Table 3 The association between maternal nativity and birth outcomes by family income: Taiwan Birth Cohort Study, 2005

From: Adverse birth outcomes among native-born and foreign-born mothers in Taiwan: A population-based birth cohort study

Income Nativity Low birth weight Preterm birth
   n % OR   95% CI AORa   95% CI n % OR   95% CI AORb   95% CI
<NT$30,000 Taiwan-born 131 9.7 1.00    1.00    128 9.5 1.00    1.00   
n = 2187 Foreign-born 33 4.0 0.38 *** 0.26–0.57 0.24 *** 0.14–0.42 52 6.2 0.63 ** 0.45–0.89 0.63 * 0.40–0.99
NT$30,000–69,999 Taiwan-born 685 7.1 1.00    1.00    835 8.7 1.00    1.00   
n = 11346 Foreign-born 94 5.6 0.77 * 0.62–0.96 0.77   0.58–1.03 122 7.2 0.82 * 0.67–1.00 0.68 ** 0.53–0.88
NT$70,000+ Taiwan-born 395 6.1 1.00    1.00    505 7.9 1.00    1.00   
n = 6557 Foreign-born 6 5.0 0.81   0.35–1.84 0.67   0.24–1.86 8 6.7 0.84   0.41–1.73 0.63   0.25–1.55
  1. *p<0.05, **p<0.01, ***p<0.001.
  2. AORab : Adjusted odds ratio for infant sex, birth order, maternal age, singleton, place of residence, maternal education, smoking during pregnancy, pregnancy complications, first-time prenatal care, and number of prenatal visits.
  3. 1 US dollar equaled 32.167 New Taiwan dollars in 2005 [21].