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Table 2 The mean score change on danger signs between intervention and controls (N = 450)

From: Improving pregnant women’s knowledge on danger signs and birth preparedness practices using an interactive mobile messaging alert system in Dodoma region, Tanzania: a controlled quasi experimental study

Variables

Control

Intervention

P-value

Cohen’s d effect size

Mean score (SD)

95% CI (lower –upper)

Mean score (SD)

95% CI (lower –upper)

Knowledge

 Pre-test

4.71 (3.382)

4.344–5.235

4.78 (3.227)

4.303–5.495

0.826

 

 Post-test

6.518 (4.304)

6.145–6.891

9.531(2.666)

9.003–10.059

0.000

0.85

  1. *Ancova test results