Table 1

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

* p < 0.05

Qiu et al. International Breastfeeding Journal 2008 3:4   doi:10.1186/1746-4358-3-4