Skip to main content

Table 4 Sensitivity analysis: Adjusted odds of cesarean vs. vaginal birth for native-born Taiwanese, Chinese and Vietnamese mothers among sub-groups categorized by maternal age, paternal age, previous cesarean, urban/rural, birth weight, and institutional setting

From: Cesarean and VBAC rates among immigrant vs. native-born women: a retrospective observational study from Taiwan Cesarean delivery and VBAC among immigrant women in Taiwan

Stratification variable Chinese Vietnamese   Taiwanese
  Unadjusted Adjusted Unadjusted Adjusted Reference
Maternal age
   Aged <20, n = 11390 0.70(0.08, 5.79) 0.84(0.10, 7.27) 0.74(0.65, 0.84) 0.79(0.64, 0.98 1
   Aged 20-35, n = 337562 0.76(0.74, 0.79) 0.86(0.83, 0.90) 0.50(0.48, 0.52) 0.57(0.54, 0.59) 1
   Aged >35, n = 43294 0.73(0.66, 0.82) 1.06(0.94, 1.21) 0.80(0.64, 0.99 1.23(0.96, 1.60) 1
Paternal age (y/o)      
   <25, n = 22270 0.93(0.65, 1.33) 0.97(0.66, 1.43) 0.73(0.52, 1.03) 0.79(0.54, 1.14) 1
   25-35, n = 229915 0.74(0.70, 0.78) 0.86(0.81, 0.91) 0.47(0.44, 0.50) 0.57(0.53, 0.61) 1
   >35, n = 113639 0.60(0.57, 0.62) 0.89(0.84, 0.94) 0.37(0.35, 0.38) 0.59(0.56, 0.62) 1
History of previous cesarean
   Yes, n = 55480 0.80(0.65, 0.98) 0.78(0.62, 0.96) 0.65(0.53, 0.81) 0.61(0.49, 0.77) 1
   No, n = 336766 0.84(0.80, 0.87) 0.89(0.85, 0.92) 0.54(0.52, 0.56) 0.59(0.57, 0.62) 1
Urbanization
   Urban, n = 285771 0.74(0.72, 0.77) 0.88(0.85, 0.92) 0.47(0.45, 0.49) 0.57(0.56, 0.62) 1
   Suburban, n = 61117 0.78(0.72, 0.85) 0.90(0.81, 0.99) 0.49(0.45, 0.53) 0.61(0.56, 0.67) 1
   Rural, n = 45359 0.72(0.65, 0.79) 0.80(0.71, 0.90) 0.46(0.43, 0.50) 0.59(0.53, 0.65) 1
Birthweight
   Birthweight <1SD, n = 48350 0.76(0.68, 0.85) 0.91(0.80, 1.03 0.50(0.46, 0.55) 0.69(0.62, 0.77) 1
   Birthweight ± 1SD, n = 291608 074(0.71, 0.77) 0.86(0.82, 0.90) 0.46(0.44, 0.48) 0.57(0.54, 0.60) 1
   Birthweight > 1SD, n = 52288 0.69(0.64, 0.74) 0.86(0.79, 0.93) 0.50(0.45, 0.54) 0.66(0.59, 0.73) 1
Institutional setting
   Clinic, n = 129252 0.74(0.70, 0.78) 0.84(0.79, 0.90) 0.44(0.42, 0.47) 0.58(0.54, 0.62) 1
   Hospital, n = 262994 0.69(0.64, 0.74) 0.86(0.79, 0.93) 0.50(0.46, 0.54) 0.66(0.59, 0.73) 1
  1. * Odds ratios with statistical significance are in bold type. Adjusted odds are obtained after adjusting for all variables other than the categorization variable, per the list of variables used for the full sample, Table 3.