Table 3 Secondary outcomes by study group (n = 346). Models include study group, follow up number, the interaction between study group and follow up number
From: Mother’s Milk Messaging™: trial evaluation of app and texting for breastfeeding support
Variable | Study Group | P-value for interaction | |
|---|---|---|---|
Control (N = 118) | Intervention (N = 227) | ||
Longitudinal breastfeeding | 0.85 | ||
Estimated proportion (95% CI) breastfeeding at follow up 1 | 77% (66%-86%) | 76% (67%-83%) | |
Estimated proportion (95% CI) breastfeeding at follow up 2 | 66% (53%-77%) | 66% (57%-74%) | |
Data collected at baseline, first and second follow up visits | |||
Knowledge-Attitudes (Iowa Infant Feeding Attitude Scale) score | |||
P value for interaction term in model | 0.18 | ||
Estimated Mean (95% CI) at Baseline: | 67.0 (65.4–68.5) | 66.2 (65.1–67.3) | |
Estimated Mean (95% CI) at 3 months: | 65.4 (63.8–67.0) | 65.7 (64.5–66.9) | |
Estimated Mean (95% CI) at 6 months: | 64.9 (63.2–66.5) | 65.8 (64.6–66.9) | |
Breastfeeding self-efficacy score | |||
P value for interaction term in model | 0.0496 | ||
Estimated Mean (95% CI) at Baseline: | 135.3 (129.5–141.0) | 129.6 (125.4–133.7) | |
Estimated Mean (95% CI) at 3 months: | 127.4 (121.4–133.5) | 129.6 (125.1–134.0) | |
Estimated Mean (95% CI) at 6 months: | 126.9 (120.9–132.9) | 130.0 (125.7–134.4) | |
Social Support Scale | |||
P value for interaction term in model | 0.43 | ||
Estimated Mean (95% CI) at Baseline: | 33.6 (32.6 -34.6) | 32.8 (32.1–33.6) | |
Estimated Mean (95% CI) at 3 months: | 32.1 (31.1–33.2) | 32.2 (31.4–33.0) | |
Estimated Mean (95% CI) at 6 months: | 32.2 (31.1–33.3) | 31.5 (30.8–32.3) | |
Perceived Breastfeeding Support Scale | |||
P value for interaction term in model | 0.01 | ||
Estimated Mean (95% CI) at Baseline: | 11.3 (10.6–12.0) | 11.1 (10.6–11.6) | |
Estimated Mean (95% CI) at 3 months: | 13.0 (12.3–13.7) | 14.2 (13.6–14.7) | |
Estimated Mean (95% CI) at 6 months: | 13.4 (12.7–14.1) | 13.8 (13.3–14.3) | |