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Table 1 Characteristics of participants by each occupational field in survey study (N = 9725)

From: The association between work related factors and breastfeeding practices among Chinese working mothers: a mixed-method approach

  Unemployed (n = 3910) Agriculture related (n = 1937) Industry related (n = 237) Business and white collar (n = 3641) Total (n = 9725)
Maternal age, year (SD) 28.59 (4.98) 27.57 (5.51) 29.58 (4.02) 30.53 (4.69) 29.15 (5.11)
Pre-pregnancy BMI, Kg/m2 (SD) 22.38 (9.07) 22.38 (5.13) 22.91 (4.38) 22.04 (6.91) 22.26 (7.37)
Gestational age, week (SD) 38.99 (1.43) 39.15 (1.37) 38.92 (1.26) 38.93 (1.45) 38.99 (1.41)
Infant birthweight, kg (SD) 3.42 (0.59) 3.27 (0.56) 3.34 (0.50) 3.42 (0.77) 3.36 (0.66)
Infant age, month (SD) 5.39 (3.44) 5.65 (3.41) 5.34 (3.37) 5.26 (3.42) 5.38 (3.44)
Infant sex, n (%)
 Male 2023 (51.74) 985 (50.85) 109 (45.99) 1808 (49.66) 4925 (50.64)
 Female 1887 (48.26) 952 (49.15) 128 (54.01) 1833 (50.34) 4800 (49.36)
Parity, n (%)
 Primiparous 1624 (41.53) 729 (37.64) 71 (29.96) 1991 (54.68) 4415 (45.40)
 Multiparous 2286 (58.47) 1208 (62.36) 166 (70.04) 1650 (45.32) 5310 (54.60)
Delivery method, n (%)
 Vaginal delivery 2220 (56.77) 1263 (65.19) 92 (38.94) 1994 (54.76) 5571 (57.29)
 Cesarean section 1690 (43.23) 674 (34.81) 145 (61.06) 1647 (45.24) 4154 (42.71)
Region, n (%)
 Urban 2532 (64.76) 649 (33.51) 80 (33.76) 3116 (85.58) 6377 (65.57)
 Rural 1378 (35.24) 1288 (66.49) 157 (66.24) 525 (14.42) 3348 (34.43)
Maternal education, n (%)
 Primary school and below 287 (7.34) 456 (23.54) 5 (2.11) 38 (1.04) 786 (8.08)
 Middle School 1784 (45.63) 1261 (65.10) 122 (51.48) 386 (10.60) 3553 (36.53)
 High/Vocational School 1009 (25.81) 159 (8.21) 59 (24.89) 527 (14.47) 1754 (18.04)
 College and above 830 (21.23) 61 (3.15) 51 (21.52) 2690 (73.88) 3632 (37.35)
Resident status, n (%)
 Local 2314 (59.18) 1574 (81.26) 175 (73.84) 2024 (55.59) 6087 (62.59)
 Migrant 1596 (40.82) 363 (18.74) 62 (26.16) 1617 (44.41) 3638 (37.41)
Employment status, n (%)
 Informal / 1916 (98.92) 176 (74.26) 1089 (29.91) 6774 (69.66)
 Formal / 21 (1.08) 61 (25.74) 2552 (70.09) 2951 (30.34)
Had breastfeeding intention, n (%)
 Never/Rarely 29 (0.74) 17 (0.88) 1 (0.42) 29 (0.80) 76 (0.78)
 Sometimes/Often 249 (6.37) 46 (2.38) 19 (8.02) 317 (8.73) 631 (6.50)
 Always 3628 (92.88) 1870 (96.74) 217 (91.56) 3286 (90.47) 9001 (92.72)