Table 1 Background characteristics of mothers who completed the survey (mean ± SD / n(%))
Mean ± SD / N(%) | N (%) | Before | During | Total | P value |
|---|---|---|---|---|---|
(N = 1231) | (N = 576) | (N = 1807) | |||
Maternal age (years) | 1771 (98) | 31.6 ± 4.1 | 30.9 ± 4.2 | 31.4 ± 4.2 | 0.000 |
Maternal schooling years | 1775 (98.2) | 15.3 ± 2.6 | 15.3 ± 2.5 | 15.3 ± 2.6 | 0.990 |
Maternal education | 1787 (98.9) | ||||
Diploma or under | 528 (43.3) | 255 (44.8) | 783 (43.8) | 0.889 | |
Bachelor’s degree | 504 (41.4) | 234 (41.1) | 738 (41.3) | ||
Master’s degree | 168 (13.8) | 73 (12.8) | 241 (13.5) | ||
PhD/professional qualification | 18 (1.5) | 7 (1.2) | 25 (1.4) | ||
Household income in CNY | 1791 (99.1) | ||||
< 20,000 | 431 (35.3) | 215 (37.8) | 646 (36.1) | 0.031 | |
< 30,000 | 264 (21.6) | 148 (26) | 412 (23) | ||
< 40,000 | 168 (13.7) | 62 (10.9) | 230 (12.8) | ||
< 50,000 | 67 (5.5) | 17 (3) | 84 (4.7) | ||
> 50,000 | 33 (2.7) | 17 (3) | 50 (2.8) | ||
Other | 15 (1.2) | 3 (0.5) | 18 (1) | ||
Prefer not to say | 244 (20) | 107 (18.8) | 351 (19.6) | ||
Maternal social class | 1713 (94.8) | ||||
IV & V | 358 (30.7) | 172 (31.5) | 530 (30.9) | 0.762 | |
III | 375 (32.1) | 181 (33.2) | 556 (32.5) | ||
I & II | 434 (37.2) | 193 (35.3) | 627 (36.6) | ||
Infant gestation (weeks) | 1783 (98.7) | 38.8 ± 1.5 | 38.8 ± 1.4 | 38.8 ± 1.5 | 0.740 |
Infant gender | 1803 (99.8) | ||||
Male | 645 (52.5) | 279 (48.6) | 924 (51.2) | 0.125 | |
Female | 584 (47.5) | 295 (51.4) | 879 (48.8) | ||
Infant age (months) | 1807 (100) | 10.9 ± 3.1 | 6.6 ± 1.4 | 9.5 ± 3.3 | 0.000 |
Total No. of children in household | 1794 (99.3) | ||||
more than one child | 454 (37.1) | 211 (37) | 665 (37.1) | 0.945 | |
only one child | 769 (62.9) | 360 (63) | 1129 (62.9) | ||
Current accommodation | 1631 (90.3) | ||||
Bungalow | 5 (0.5) | 4 (0.8) | 9 (0.6) | 0.000 | |
T-apartment without garden | 112 (10.2) | 124 (23.4) | 236 (14.5) | ||
T-apartment with garden | 259 (23.5) | 100 (18.9) | 359 (22) | ||
B-apartment without garden | 162 (14.7) | 66 (12.5) | 228 (14) | ||
B-apartment with garden | 538 (48.8) | 231 (43.7) | 769 (47.1) | ||
Villa | 26 (2.4) | 4 (0.8) | 30 (1.8) |