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Table 2 Characteristics of mothers who participated in household surveys at baseline, prior to intervention and 12 months after the intervention

From: A continuous quality improvement intervention to improve the effectiveness of community health workers providing care to mothers and children: a cluster randomised controlled trial in South Africa

  Baseline household survey T1 Follow-up household survey T2
Control N = 370 Intervention N = 366 Total N = 736 Control N = 310 Intervention N = 296 Total N = 606
Mother’s age (median, IQR) 25.0 (21.0–30.0) 24.0 (20.0–30.0) 24 (21.0–30.0) 23.0 (20.0–29.0) 23.0 (20.0–28.0) 23.0 (20.0–29.0)
  p value = 0.63   p value = 0.65  
Youngest child’s age (months) (median, IQR) 5.5 (2.5–8.6) 5.2 (2.7–8.9) 5.4 (2.6–8.7) 6.1 (3.0–8.0) 6.0 (2.8–8.8) 6.0 (2.9–8.8)
  p value = 0.80   p value = 0.98  
Education
 None 6 (1.6) 8 (2.2) 14 (1.9) 5 (1.6) 6 (2.1) 11 (1.8)
 Grade 1 to Grade 8 74 (20.1) 82 (22.7) 156 (21.3) 49 (15.9) 64 (22.1) 113 (18.9)
 Grade 9 to Grade 12 286 (77.5) 267 (73.8) 553 (75.7) 240 (77.7) 215 (74.1) 455 (76.0)
 Post-school qualification 3 (0.81) 5 (1.4) 8 (1.1) 15 (4.9) 5 (1.7) 20 (3.3)
  p value = 0.65   p value = 0.09  
HIV serostatus
 HIV-positive 111 (30.0%) 99 (27.1%) 210 (28.5%) 84 (27.1%) 80 (27.0%) 164 (27.1%)
 HIV-negative 257 (69.5%) 260 (71.0%) 517 (70.2%) 218 (70.3%) 200 (67.6%) 418 (69.0%)
 Do not know or refused to answer 2 (0.54%) 7 (1.9%) 9 (1.2%) 8 (2.6%) 16 (5.4%) 24 (4.0%)
  p value = 0.89   p value = 0.45  
Employed 32 (8.7) 28 (7.8) 60 (8.2) 25 (8.1) 22 (7.5) 47 (7.8)
  p value = 0.67   p value = 0.83  
Received child support grant 281 (76.0) 260 (71.4) 541 (73.7) 221 (71.8) 192 (66.0) 413 (69.0)
  p value = 0.46   p value = 0.17  
Father of child alive 360 (97.3) 357 (97.8) 717 (97.6) 306 (99.4) 288 (99.0) 594 (99.2)
  p value = 0.95   p value = 0.43  
Father of child lives in home (if alive) 68 (18.9) 86 (24.1) 154 (21.5) 48 (15.7) 52 (18.1) 100 (16.8)
  p value = 0.13   p value = 0.47  
Adult household member died in past 12 months 50 (13.7) 45 (12.5) 95 (13.1) 57 (18.5) 53 (18.2) 110 (18.4)
  p value = 0.69   p value = 0.96  
Time to clinic (hours) (median, IQR) 0.50 (0.33–1.0) 0.50 (0.42–1.0) 0.50 (0.42–1.0) 0.50 (0.33–1.0) 0.50 (0.46–1.0) 0.50 (0.33–1.0)
  p value = 0.33   p value = 0.56  
Cost of transport to clinic (South African rand) (median, IQR) 5 (0–9) 7 (0–9) 6.9 (0–9) 6 (0–10) 6 (0–10) 6 (0–10)
  p value = 0.72   p value = 0.54