Table 2 Social background of responders
Characteristics relating to social background | Preterm/LBW delivery (n = 31) | Term AFD delivery (n = 287) | p value | Term AFD delivery | p value | |
|---|---|---|---|---|---|---|
Primipara (n = 141) | Multipara (n = 146) | |||||
Unwanted pregnancy | ||||||
  Yes | 1 (3.2 %) | 8 (2.8 %) | 0.023 | 3 (2.1 %) | 5 (3.4 %) | 0.525 |
  Not sure | 10 (32.3 %) | 39 (13.6 %) | 22 (15.6 %) | 17 (11.7 %) | ||
  No | 20 (64.5 %) | 239 (83.6 %) | 116 (82.3 %) | 123 (84.9 %) | ||
Support from husband during pregnancy | ||||||
  Yes | 25 (80.6 %) | 246 (85.7 %) | 0.654 | 116 (82.2 %) | 130 (89.8 %) | 0.210 |
  Not sure | 4 (12.9 %) | 31 (10.8 %) | 18 (12.8 %) | 18 (12.4 %) | ||
  No | 2 (6.5 %) | 10 (3.5 %) | 7 (5.0 %) | 7 (4.8 %) | ||
Family composition | ||||||
  Nuclear family | 23 (74.2 %) | 247 (86.7 %) | 0.102 | 119 (84.4 %) | 128 (88.9 %) | 0.298 |
  Extended family | 8 (25.8 %) | 38 (13.3 %) | 22 (15.6 %) | 16 (11.1 %) | ||
Number of children | 1.6 ± 0.7 2.0 [1–4] | 1.6 ± 0.7 2.0 [1–4] | 0.881 | 1.0 ± 1.9 1.0 [1–3] | 2.2 ± 0.5 2.0 [1–4] | <0.001 |
Siblings | ||||||
  Yes | 16 (51.6 %) | 145 (50.7 %) | 1.000 | 2 (1.4 %) | 143 (98.6 %) | <0.001 |
  No | 15 (48.4 %) | 141 (49.3 %) | 139 (98.6 %) | 2 (1.4 %) | ||
Employment status | ||||||
  Homemaker | 20 (64.5 %) | 167 (58.6 %) | 0.654 | 83 (58.9 %) | 84 (58.3 %) | 0.934 |
  On maternity leave | 9 (29.0 %) | 105 (36.8 %) | 51 (36.1 %) | 54 (37.5 %) | ||
  Working | 2 (6.5 %) | 13 (4.6 %) | 7 (5.0 %) | 6 (4.2 %) | ||
Annual income (in million yen) | ||||||
  <2 | 1 (3.8 %) | 12 (4.3 %) | 0.932 | 12 (8.6 %) | 0 (0.0 %) | 0.007 |
  2 to ≤4 | 14 (53.9 %) | 123 (44.7 %) | 63 (45.0 %) | 60 (44.2 %) | ||
  4 to ≤6 | 9 (34.7 %) | 97 (35.2 %) | 44 (31.4 %) | 53 (39.0 %) | ||
  6 to ≤8 | 1 (3.8 %) | 26 (9.4 %) | 15 (10.7 %) | 11 (8.1 %) | ||
  8 to ≤10 | 1 (3.8 %) | 12 (4.3 %) | 5 (3.6 %) | 7 (5.1 %) | ||
  10 to ≤12 | 0 (0.0 %) | 4 (1.4 %) | 0 (0.0 %) | 4 (2.9 %) | ||
  12 to ≤14 | 0 (0.0 %) | 2 (0.7 %) | 1 (0.7 %) | 1 (0.7 %) | ||