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Table 1 Demographic details of mothers' in the city, suburb and rural areas, Zhejiang Province, People's Republic of China, 2004–2005 (n = 1520)

From: A cohort study of infant feeding practices in city, suburban and rural areas in Zhejiang Province, PR China

Variable City Suburb Rural Total
  n % n % n % n %
Residence 638 42.0 347 22.8 535 35.2 1520 100.0
Maternal Age (years)*         
   <25 77 12.0 124 35.7 158 30.6 358 23.9
   25–29 383 60.2 165 47.6 255 49.2 800 53.5
   30–34 151 23.9 51 14.7 80 15.5 282 18.9
   ≥35 25 3.9 7 2.0 24 4.7 56 3.7
   Missing 5   0   19   24  
Maternal education (years)*         
   ≤9 57 9.0 206 59.4 282 53.1 544 36.0
   10–12 172 26.9 78 22.5 121 22.9 370 24.5
   >12 407 64.1 63 18.2 127 24.0 597 39.5
   Missing 3     6   9  
Maternal employment*         
   Labour job 67 10.5 188 55.1 238 47.1 492 33.3
   Office job 494 78.4 90 26.4 179 35.4 763 51.7
   Not employed 70 11.1 63 18.5 89 17.4 221 15.0
   Missing 8   6   30   44  
Gestation (weeks)*         
   <37 30 4.7 7 2.0 12 2.4 49 3.3
   ≥37 605 95.3 340 98.0 499 97.6 1443 96.7
   Missing 3   0   25   28  
Birth weight (g)         
   <2500 9 1.4 7 2.0 11 2.1 27 1.8
   2500–3999 583 91.8 310 89.3 489 93.3 1382 91.8
   ≥4000 43 6.8 30 8.6 24 4.6 97 6.4
   Missing 3   0   11   14  
Delivery method*         
   Vaginal 155 24.3 90 25.9 252 47.2 495 32.7
   Caesarean 481 75.7 257 74.1 281 52.8 1019 67.3
   Missing 3   0   3   6  
Birth order*         
   1 615 96.9 290 84.1 442 83.4 1347 89.2
   ≥2 20 3.1 55 15.9 89 16.6 163 10.8
   Missing 3   2   5   10  
Baby's gender         
   Male 347 54.2 162 47.4 260 49.7 767 51.1
   Female 291 45.8 180 52.6 263 50.3 734 48.9
   Missing 2   5   12   19  
Monthly family income* (RMB)         
   ≤1500 6 1.0 51 15.0 158 31.3 215 14.6
   1501–3000 75 11.9 145 42.8 182 35.9 401 27.2
   3001–5000 227 35.7 97 28.6 129 25.6 451 30.6
   >5000 326 51.5 46 13.6 36 7.1 407 27.6
   Missing 7   8   31   46  
  1. * p < 0.05