Very preterm (≤ 32 weeks) | Preterm (33–36 weeks) | Term (37+ weeks) | |
---|---|---|---|
Cases, N = 114; controls, N = 323 | Cases, N = 192; controls, N = 509 | Cases, N = 401; controls, N = 897 | |
Combined strength and frequency of foetal movements in the last 2 weeks | |||
Increased strength | 0.04 (0.01, 0.15) | 0.13 (0.07, 0.24) | 0.29 (0.20, 0.43) |
Increased frequency but not strength | 0.06 (0.01, 0.62) | 0.79 (0.27, 2.27) | 0.58 (0.26, 1.26) |
Decreased frequency | 6.98 (1.63, 29.84) | 3.48 (1.67, 7.23) | 1.95 (1.33, 2.86) |
Unsure of strength or frequency | 0.25 (0.04, 1.49) | 1.38 (0.44, 4.37) | 0.95 (0.50, 1.82) |
The same strength or frequency | 1.00 | 1.00 | 1.00 |
Vigorous Foetal movements in the last 2 weeks | |||
Once | 1.78 (0.50, 6.31) | 2.56 (1.13, 5.83) | 3.78 (2.35, 6.08) |
More than once | 0.66 (0.23, 1.88) | 0.63 (0.36, 1.11) | 0.66 (0.46, 0.93) |
Never | 1.00 | 1.00 | 1.00 |
Hiccups in the last 2 weeks | |||
Yes | 0.61 (0.24, 1.58) | 0.33 (0.19, 0.56) | 0.39 (0.29, 0.55) |
No | 1.00 | 1.00 | 1.00 |
Unsure | 0.83 (0.17, 3.91) | 0.60 (0.21, 1.72) | 0.98 (0.48, 1.98) |