Reported seatbelt use before pregnancy and current use among 880 pregnant women in Japan, shown by gestation period*†; results are number (%)
| <20 weeks | 20–29 weeks | 30 weeks + | ||||
|---|---|---|---|---|---|---|
| Location/seatbelt use | Before | Current | Before | Current | Before | Current |
| *Total number (in driver's seat) is not equal to the number of pregnant women (with driver's license) due to missing data. | ||||||
| †Seatbelt use before pregnancy was not significanly different across gestation periods, whereas the difference in current use was significant across gestation periods. | ||||||
| Driver's seat | ||||||
| Always | 172 (82.3) | 129 (62.3) | 211 (83.4) | 127 (51.4) | 229 (78.4) | 108 (37.9) |
| Often | 14 (6.7) | 22 (10.6) | 17 (6.7) | 30 (12.1) | 31 (10.6) | 32 (11.2) |
| Sometimes | 19 (9.1) | 34 (16.4) | 22 (8.7) | 42 (17.0) | 29 (9.9) | 58 (20.4) |
| Never | 4 (1.9) | 22 (10.6) | 3 (1.2) | 48 (19.4) | 3 (1.0) | 87 (30.5) |
| Front passenger's seat | ||||||
| Always | 164 (76.3) | 118 (55.1) | 190 (72.0) | 108 (41.4) | 208 (67.3) | 89 (29.2) |
| Often | 19 (8.8) | 35 (16.4) | 24 (9.1) | 36 (13.8) | 45 (14.6) | 26 (8.5) |
| Sometimes | 25 (11.6) | 33 (15.4) | 41 (15.5) | 57 (21.8) | 42 (13.6) | 81 (26.6) |
| Never | 7 (3.3) | 28 (13.1) | 9 (3.4) | 60 (23.0) | 14 (4.5) | 109 (35.7) |