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Table 5 Percent of matched live births that are backward displaced, reported correctly, or forward displaced relative to the actual date, mean displacement (in months), and percent displaced according to two covariates, by questionnaire type

From: The validity of birth and pregnancy histories in rural Bangladesh

Variable and category Questionnaire type
Both types Birth history Pregnancy history
Number of matched births (N) 5356 2636 2720
Percent displaced    
 Backward displaced (i.e. reported too old) 28.5 27.9 29.2
 Reported correctly 43.9 43.9 43.9
 Forward displaced (i.e., reported too young) 27.6 28.2 26.9
Mean number of months displaced    
 Backward displaced −15.6 −15.2 −16.1
 Forward displaced +15.5 +15.5 +15.4
Percent displaced by characteristic of the event    
 Survival status at time of interview    
  Alive 53.9 54.0 53.8
  Dead 71.7 72.3 71.2
 Number of months before survey    
  0–59 27.6 26.6 28.7
  60–119 63.0 64.0 62.1
  120–179 76.1 75.7 76.6