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Table 4 Comparison of baseline characteristics between analytic and missing samples, Bachpan cohort, Pakistan

From: Maternal depression in rural Pakistan: the protective associations with cultural postpartum practices

  Analytic Sample Reappear at 6 Months Test of Difference+ Only in Baseline Test of Difference++
N = 823 N = 105    N = 226   
N/Mean %/SD    T-Test Chi-Squared N/Mean %/SD T-Test Chi-Squared
Demographic Characteristics
 Maternal Age 26.62 4.43 26.63 4.64 −0.01   27.05 4.91 −1.25  
Maternal Education       4.29     
 None 111 12.84 18 17.14    41 18.14   3.47
 Primary (1–5) 159 18.33 23 21.9    44 19.47   
 Middle (6–8) 157 18.67 19 18.1    39 17.26   
 Secondary (9, 10) 209 25.66 28 26.67    56 24.78   
 Higher Secondary (11, 12) 84 10.35 5 4.76    20 8.85   
 Tertiary (> 12) 103 14.16 12 11.43    26 11.50   
Parity       0.11     3.06
 First Pregnancy 238 28.92 32 30.48    79.00 34.96   
 One or more children 585 71.08 73 69.52    147.00 65.04   
SES Quintiles       4.67     4.07
 Lowest 153 16.93 27 25.71    50 22.12   
 Lower Middle 163 18.08 17 16.19    51 22.57   
 Middle 171 20.66 16 15.24    44 19.47   
 Upper Middle 165 21.51 21 20    45 19.91   
 Highest 171 22.82 24 22.86    36 15.93   
Mother-in-law       0.33     4.45*
 Yes 557 68.5 74 70.48    136 60.18   
 People in Room 2.37 1.73 2.16 1.13 1.20   2.72 2.56 −2.36*  
Depression Characteristics
 SCID Baseline 405 49.21 52 49.52   0.00 105 46.88   0.38
 PHQ-9 Baseline 8.73 6.68 8.22 6.79 0.74   8.65 6.82 0.16  
  1. *p < .05, ** < .01, ***p < .001; + Test of difference between analytic sample and those reappearing at 6 months; ++ Test of difference between analytic sample and those only at baseline; Abbreviations: Socioeconomic Status (SES), Patient Health Questionnaire (PHQ-9), Structured Clinical Interview for DSM-IV (SCID)