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Table 1 Parental demographics, maternal risk factors, neonatal characteristics and institutional setting of births distributed by maternal ethnicity in Taiwan, 2006-2007*

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

Characteristics‡ Taiwanese, n = 349,730 Chinese, n = 19,866 Vietnamese, n = 22,650 Total, n = 392,246
  n (%) n (%) n (%) n (%)
Parental characteristics    
Maternal age     
   <20 9,303 (2.7) 7 (0.0) 2,080 (9.2) 11390(2.9)
   20-35 298,825 (85.4) 18,491 (93.1) 20,246 (89.4) 337,562(86.1)
   >35 41,602 (11.9) 1,368 (6.9) 324 (1.4) 43,294(11.0)
Paternal age (y/o)
   <25 21,893 (6.8) 166 (0.8) 211 (0.9) 22,270 (6.1)
   25-35 214,519 (66.3) 7,795 (39.6) 7,601 (33.9) 229,915 (62.8)
   >35 87,313 (27.0) 11,724 (59.6) 14,602 (65.1) 113,639 (31.1)
Single 26,002 (7.4%) 179 (0.9%) 236 (1.0%) 26,417 (6.7%)
History of cesarean 51,948(14.9%) 1.995(10.0%) 1,537(6.8%) 55480(14.1%)
Length of gestation     
   Preterm 25,521(7.3) 839(4.2) 1287(5.7) 27,647(7.0)
   Term 323,451(92.5) 18923(95.3) 21,241(93.8) 363,615(92.7)
   Prolonged 758(0.2) 104(0.5) 122(0.5) 984(0.3)
Gestational age (wks), 38.4 ± 1.6 38.8 ± 1.4 38.6 ± 1.5 38.4 ± 1.6
Urbanization
   Urban 256,860 (73.4) 13,753 (69.2) 12,824 (56.6) 283,437 (72.3)
   Suburban 53,324 (15.2) 3,094 (15.6) 4,699 (20.7) 61,117 (15.6)
   Rural 39,546 (11.3) 3,019 (15.2) 5,127 (22.6) 47,692 (12.2)
Neonatal characteristics     
Male 182,829(52.3) 10,392(52.3) 11,806(52.1) 205,027(52.3)
Birth weight <1SD 44,280(12.7) 1,463(7.4) 2,607(11.5) 48,350(12.3)
Birth weight intermediate 259,670(74.2) 14,530(73.1) 17,408(76.9) 291,608(74.3)
Birth weight >1SD 45,780(13.1) 3,873(19.5) 2,635(11.6) 52,288(13.3)
Maternal medical complications    
Diabetes 2659(0.8) 55(0.3) 19(0.1) 2733(0.7)
Hypertension 4099(1.2) 72(0.4) 55(0.2) 4226(1.1)
Major obstetric complications 29627(8.5) 1233(6.2) 1197(5.3) 32057((8.2)
Institutional setting     
   Clinic 111,776 (32.0) 7,186 (36.2) 10,290 (45.4) 129,252 (33.0)
   Hospital 237,954 (68.0) 12,680 (63.8) 12,360 (54.6) 262,994 (67.0)
  1. *Data received from the Taiwan Bureau of Health Promotion
  2. †Differences between Taiwanese and immigrant women are significant for gestational age, P < 0.01
  3. ‡Differences between Taiwanese and immigrant women (chi-square tests) are significant for all variables (maternal age, paternal age, marriage, hypertension, diabetes, major obstetric complications, length of gestation, urbanization residence, birth weight) at a p < 0.01, except male gender with P = 0.90)