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Table 1 Characteristics of participants, by strata of temporal discounting (N = 432)

From: Role of temporal discounting in a conditional cash transfer (CCT) intervention to improve engagement in the prevention of mother-to-child transmission (PMTCT) cascade

  Temporal discounting rate
Total (N = 432) Low rate
(n = 58)
High rate (n = 374) p-valueb
Age: median (IQR) 29 (25–34) 29.5 (27–34) 29 (25–34) 0.34
N % N % N %  
Retention at 6 weeks postpartuma
 Retained 158 72.8 24 77.4 134 72.0 0.53
 Not retained 59 27.2 7 22.6 52 28.0  
Uptake of PMTCT servicesa
 Complete Uptake 117 53.9 23 74.2 92 49.5 0.01
 Incomplete Uptake 100 46.1 8 25.8 94 50.5  
CD4+ T-cell Count        0.66
  ≤ 350 cells/mL 167 38.7 26 44.8 141 37.7  
  > 350 cells/mL 208 48.1 29 50.0 179 47.9  
 Missing 57 13.2 3 5.2 54 14.4  
Wealth Index        0.19
 Upper 173 40.0 17 29.3 156 41.7  
 Middle 86 20.0 13 22.4 73 19.5  
 Lower 173 40.0 28 48.3 145 38.8  
Study Group        0.60
 Intervention 215 49.8 27 46.6 188 50.3  
 Control 217 50.2 31 53.4 186 49.7  
Depression Symptoms        < 0.001
 PHQ-9 score < 15 381 88.2 43 74.1 338 90.4  
 PHQ-9 score ≥ 15 51 11.8 15 25.9 36 9.6  
Alcohol use in pregnancy        0.14
 Yes 108 25.0 19 32.8 89 23.8  
 No 324 75.0 39 67.2 285 76.2  
  1. IQR Interquartile Range, CCT Conditional Cash Transfer, PHQ-9 Patient Health Questionnaire
  2. aAnalysis limited to individuals who did not receive the conditional cash transfer intervention (n = 217) in order to avoid possible mixing of effects
  3. bFor continuous variables, p-values were calculated using the Wilcoxon Rank Sum test. For categorical variables, p-values were calculated using Pearson’s χ2 test. All tests used complete case analysis (i.e., omitting missing observations)