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Table 5 Predictors of high antenatal care score - intention to treat analysis

From: PRENACEL – a mHealth messaging system to complement antenatal care: a cluster randomized trial

Predictor

ANCS <42 points

ANCS ≥42 points

Crude RR (95% CI)

Adjusted RR (95% CI)a

Group - ITT

 Control PCHUs

75 (17.0%)

365 (83.0%)

1

1

 Intervention PCHUs

91 (11.8%)

679 (88.2%)

1.05 (1.01–1.10)

1.05 (1.00–1.09)

Socioeconomic class

 Upper/Upper Middle

13 (11.3%)

102 (88.7%)

1

1

 Middle

58 (10.0%)

523 (90.0%)

0.95 (0.89–1.02)

1.10 (0.97–1.25)

 Lower

46 (16.3%)

236 (83.7%)

1.01 (0.95–1.08)

0.95 (0.88–1.01)

Illicit Drug use

 Yes

8 (25.8%)

23 (74.2%)

1

1

 No

133 (12.4%)

935 (87.6%)

1.14 (1.01–1.29)

1.01 (0.95–1.08)

  1. ANCS antenatal care score, PHCU Primary Health Care Units, RR Relative Risk, ITT Comparison of intervention group (women from intervention PHCUs, regardless of whether or not they had received any SMS) with control group
  2. aRR also adjusted by the number of community health workers in each group