TABLE 1.
Basic characteristics of the participating women
| Total | Dates of delivery | ||||
|---|---|---|---|---|---|
| Oct. 2019–Mar. 2020 | Apr. 2020–May 2020 | Jun. 2020–Oct. 2020 | Total | ||
| n (%) | n (%) | n (%) | n (%) | ||
| 185 (33.5) | 187 (33.8) | 181 (32.7) | 553 (100.0) | p‐value | |
| Socio‐demographic characteristics | |||||
| Age | 0.30 | ||||
| 21–29 | 52 (28.1) | 43 (23.0) | 43 (23.8) | 138 (25.0) | |
| 30–34 | 82 (44.3) | 95 (50.8) | 79 (43.7) | 256 (46.3) | |
| 35–39 | 40 (21.6) | 45 (24.1) | 48 (26.5) | 133 (24.1) | |
| 40–43 | 11 (6.0) | 4 (2.1) | 11 (6.1) | 26 (4.7) | |
| Parity | 0.07 | ||||
| Primipara | 94 (50.8) | 107 (57.2) | 82 (45.3) | 283 (51.2) | |
| Multipara | 91 (49.2) | 80 (42.8) | 99 (54.7) | 270 (48.8) | |
| Planned pregnancy | 0.63 | ||||
| Yes | 155 (83.8) | 159 (85.0) | 158 (87.3) | 472 (85.4) | |
| No | 30 (16.2) | 28 (15.0) | 23 (12.7) | 81 (14.7) | |
| Conception by fertility treatment | 0.17 | ||||
| Yes | 25 (13.5) | 32 (17.1) | 38 (21.0) | 95 (17.2) | |
| No | 160 (86.5) | 155 (82.9) | 143 (79.0) | 458 (82.8) | |
| Antenatal care visit | 0.11 | ||||
| Reduced | 4 (2.2) | 12 (6.4) | 11 (6.1) | 27 (4.9) | |
| Did not reduce | 181 (97.8) | 175 (93.6) | 170 (93.9) | 526 (95.1) | |
| Mode of delivery | 0.71 | ||||
| Vaginal delivery | 143 (77.3) | 151 (80.8) | 146 (80.7) | 440 (79.6) | |
| Cesarean section due to suspected COVID‐19 | 1 (0.5) | 0 (0.0) | 0 (0.0) | 1 (0.2) | |
| Emergency cesarean section | 20 (10.8) | 16 (8.6) | 13 (7.2) | 49 (8.9) | |
| Planned cesarean section | 21 (11.4) | 20 (10.7) | 22 (12.2) | 63 (11.4) | |
| Marital status | 0.79 | ||||
| Married | 184 (99.5) | 185 (98.9) | 180 (99.5) | 549 (99.3) | |
| Not married | 1 (0.5) | 2 (1.1) | 1 (0.6) | 4 (0.7) | |
| Household income (million yen) | 0.25 | ||||
| <5 million | 67 (36.2) | 54 (28.9) | 49 (27.1) | 170 (30.7) | |
| 5–7.9 million | 59 (31.9) | 73 (39.0) | 62 (34.3) | 194 (35.1) | |
| ≥8 million | 44 (23.8) | 38 (20.3) | 45 (24.9) | 127 (23.0) | |
| Declined to answer or do not know | 15 (8.1) | 22 (11.8) | 25 (13.8) | 62 (11.2) | |
| Work type | 0.02* | ||||
| Office | 54 (29.2) | 53 (28.3) | 58 (32.0) | 165 (29.8) | |
| Interpersonal | 51 (27.6) | 52 (27.8) | 35 (19.3) | 138 (25.0) | |
| Physical | 33 (17.8) | 40 (21.4) | 22 (12.2) | 95 (17.2) | |
| Never worked after January 2019 | 47 (25.4) | 42 (22.5) | 66 (36.5) | 155 (28.0) | |
| Partner support | 0.76 | ||||
| Poor support | 11 (6.0) | 8 (4.3) | 9 (5.0) | 28 (5.1) | |
| Not poor support | 174 (94.1) | 179 (95.7) | 172 (95.0) | 525 (94.9) | |
| Smoking at the time of survey | 0.76 | ||||
| Smoking every day or sometimes | 10 (5.4) | 8 (4.3) | 7 (3.9) | 25 (4.5) | |
| Never or previously smoked | 175 (94.6) | 179 (95.7) | 174 (96.1) | 528 (95.5) | |
| Prefecture of residence | 0.43 | ||||
| Prefectures with population > 5 million | 109 (58.9) | 121 (64.7) | 107 (59.1) | 337 (60.9) | |
| Prefectures with population < 5 million | 76 (41.1) | 66 (35.3) | 74 (40.9) | 216 (39.1) | |
*
p‐Value < 0.05.