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Table 1 Distribution of singleton sample characteristics by maternal age groups in Taiwan

From: Comparison of medical issues in antenatal and perinatal periods in early youth, adolescent, and young adult mothers in Taiwan: a 10-year nationwide study

Characteristic Maternal age (years) p-value
≤15 16–19 20–24
(n = 1,199) (n = 38,716) (n = 295,675)
no. (%) no. (%) no. (%)
Year of labor        <0.001
  2002 219 (18.3) 7,482 (19.3) 48,793 (16.5)  
  2003 187 (15.6) 6,114 (15.8) 45,014 (15.2)  
  2004 154 (12.8) 5,173 (13.4) 40,903 (13.8)  
  2005 114 (9.5) 4,425 (11.4) 35,239 (11.9)  
  2006 116 (9.7) 3,462 (8.9) 31,279 (10.6)  
  2007 101 (8.4) 3,050 (7.9) 25,635 (8.7)  
  2008 84 (7.0) 2,633 (6.8) 21,560 (7.3)  
  2009 70 (5.9) 2,301 (5.9) 17,626 (6.0)  
  2010 88 (7.3) 2,005 (5.2) 14,553 (4.9)  
  2011 66 (5.5) 2,071 (5.4) 15,073 (5.1)  
Institution levels        <0.001
  Medical center 178 (14.8) 2,623 (6.8) 23,119 (7.8)  
  Regional hospital 322 (26.9) 8,865 (22.9) 67,159 (22.7)  
  District hospital 249 (20.8) 10,482 (27.1) 82,286 (27.8)  
  Obstetrics/gynecology clinic 450 (37.5) 16,746 (43.2) 123,111 (41.7)  
Institution ownership        <0.001
  Public 124 (10.3) 3,138 (8.1) 22,152 (7.5)  
  Private for-profit 660 (55.1) 25,773 (66.6) 198,997 (67.3)  
  Non-profit proprietary 415 (34.6) 9,805 (25.3) 74,526 (25.2)  
Institution location        <0.001
  Northern 514 (42.9) 15,574 (40.2) 122,089 (41.3)  
  Central 239 (19.9) 9,056 (23.4) 70,248 (23.7)  
  Southern 369 (30.8) 12,068 (31.2) 94,280 (31.9)  
  Eastern 77 (6.4) 2,018 (5.2) 9058 (3.1)  
Physician gender        0.011
  Female 121 (10.1) 3,364 (8.7) 24,744 (8.4)  
  Male 1,078 (89.9) 35,352 (91.3) 270,931 (91.6)  
Physician age, mean (SD) 44.7 (7.1) 44.7 (6.8) 44.4 (6.5) <0.001
Parity of birth        <0.001
  1 1,176 (98.1) 34,435 (88.9) 231,580 (78.3)  
  ≥2 23 (1.9) 4,281 (11.1) 64,095 (21.7)  
Low-income family status 79 (6.6) 1,061 (2.7) 3,408 (1.2) <0.001
Delivery mode        <0.001
  Caesarean delivery 308 (25.7) 8,812 (22.8) 80,475 (27.2)  
  Virginal delivery 891 (74.3) 29,904 (77.2) 215,200 (72.8)  
  1. Values expressed as n (%) or mean (SD).