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Table 2 Cluster characteristics by study group

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

Characteristic Intervention Control
Catchment population of 2010 [19] 199,564 182,565
Population participating in income transfer program 3842 (1.9%) 3124 (1.7%)
PHCUs located in slum area 8 (80%) 5 (50%)
PHCU affiliated with universities 5 (50%) 9 (90%)
Health care team   
General practitioners and/or Obstetrician-Gynecologists 26 (17.2%) 26 (11%)
Nurses 23 (15.2%) 28 (11.9%)
Community health workers 47 (31.2%) 87 (36.9%)
Nursing Technicians 55 (36.4%) 95 (40.2%)
  1. PHCUs Primary Health Care Units