| Trimester 1 | Trimester 2 | Trimester 3 | P2
|
---|
| I | C | I | C | I | C | |
---|
GI
| 57.3 ± 4 | 57.7 ± 4 | 56.1 ± 4 | 57.8 ± 4 | 56 ± 3.7 | 57.7 ± 3.9 | <0.001 |
| P 0.251
| P <0.0011
| P <0.0011
| |
|
N (%)
|
N (%)
|
N (%)
| |
Quartile GI
| | | | | | | |
1* | 37.4 | 32.2 | 50.2 | 30.5 | 51.5 | 31.2 | |
2 | 16.2 | 20.0 | 13.6 | 19.3 | 16.2 | 19.3 | |
3 | 23.4 | 19.3 | 18.3 | 22.1 | 17.9 | 23.9 | |
4 | 23.0 | 28.4 | 17.9 | 28.1 | 14.5 | 25.6 | |
| P 0.213
| P <0.0013
| P <0.0013
| |
- C, control group (n = 285); I, intervention group (n = 235).
- *Quartile 1 (GI values 49.7 - 55.9); quartile 2 (GI values 56.0 -57.6); quartile 3 (GI values 57.7 – 59.9); quartile 4 (GI values 60.0 – 69.7).
-
1Differences in mean GI between groups across trimesters were compared using independent samples t-test.
-
2Differences in mean GI between trimester 1 and 2 and trimesters 1 and 3 within the intervention group assessed by ANOVA.
-
3Differences in numbers of women within each quartile of GI between groups were compared using the χ
2 test.