Table 3.
Multiple logistic regression of potential determinants of per protocol low‐dose aspirin usage among women with an increased risk with whom aspirin usage was discussed
| No. of participants | No. with per protocol aspirin usage, n (%; 95% CI) | Unadjusted odds ratio (95% CI) | Adjusted odds ratioa (95% CI) | |
|---|---|---|---|---|
| All | 241 | 71 (29; 24‐36) | — | — |
| Estimated PE risk | 1.23 (1.14‐1.35) | 1.18 (1.09‐1.30) | ||
| Educational level | ||||
| Primary or secondary | 106 | 30 (28; 21‐38) | 1 [Reference] | 1 [Reference] |
| Tertiary | 135 | 41 (30; 23‐39) | 1.10 (0.63‐1.94) | 1.36 (0.72‐2.62) |
| Concerns regarding PE | 2.23 (1.64‐3.09) | 1.99 (1.35‐2.98) | ||
| Concerns regarding SGA | 1.20 (0.87‐1.66) | 0.98 (0.65‐1.46) | ||
| Concerns regarding PTB | 1.31 (0.97‐1.77) | 0.79 (0.52‐1.19) | ||
| Counseling of PE risk | ||||
| by midwife | 162 | 38 (23; 18‐31) | 1 [Reference] | 1 [Reference] |
| by obstetrician | 79 | 33 (42; 32‐53) | 2.34 (1.32‐4.18) | 1.32 (0.66‐2.60) |
Abbreviations: CI, confidence interval; PE, preeclampsia; PTB, preterm birth; SGA, small‐for‐gestational‐age infancy.
a
Odds ratios adjusted for variables listed in lefthand column.