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Table 6 Predictors of high antenatal care score - per protocol 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)
Group - PP
 Control 88 (20%) 352 (80%) 1 1
 PRENACEL 7 (6%) 109 (94%) 1.14 (1.06–1.22) 1.12 (1.05–1.21)
Marital status
 Living with a partner 77 (16.3%) 394 (83.7%) 1 1
 Not living with a partner 54 (71.1%) 22 (28.9%) 0.93 (0.89–0.98) 0.92 (0.85–1.00)
Socioeconomic class
 Upper/Upper Middle 9 (15.8%) 48 (84.2%) 1 1
 Middle 27 (9.2%) 265 (90.8%) 0.95 (0.89–1.02) 0.96 (0.87–1.07)
 Lower 18 (17.3%) 86 (82.7%) 1.01 (0.95–1.08) 1.06 (0.97–1.16)
Drug use
 Yes 2 (11.8%) 15 (88.2%) 1 1
 No 66 (13.5%) 424 (86.5%) 1.14 (1.01–1.29) 0.98 (0.82–1.16)
Pregnancy intentions
 Planned pregnancy 23 (10.6%) 195 (89.4%) 1 1
 Unplanned pregnancy 44 (15.8%) 234 (84.2%) 0.93 (0.89–0.96) 0.98 (0.92–1.04)
  1. ANCS antenatal care score; Per protocol (PP) analysis: Compared PRENACEL group (only includes pregnant women who received and accessed PRENACEL SMS) with control group; RR Relative risk, CI Confidence interval