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

Table 3 Multivariate Linear Regression for Predictors of level of knowledge (N = 45)

Variables	B	95% CI lower – upper	P-value
Constant	1.149	−0.791-3.089	0.245
Intervention	2.910	2.199–3.621	< 0.001
Age of the participants in years	0.015	−0.055-085	0.672
College/University education	1.330	0.144–2.516	0.028
Gestation age at first visit in weeks	− 0.024	−0.125-0.077	0.642
Parity	0.234	0.146–0.615	0.227

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