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Table 2 Completion of mandatory and other maternal variables routinely used for surveillance (n = 1,084)

From: Validating the British Columbia Perinatal Data Registry: a chart re-abstraction study

Variable name Percent complete in reabstractiona Percent complete in BCPDRa p-value if <0.05
Antenatal information    
 Maternal date of birthb 100.0 100.0  
 Pre-pregnancy weight 83.0 76.8 <0.001
 Admission weight 66.9 58.3 <0.001
 Height 82.4 71.2 <0.001
 Gravidab 100.0 100.0  
 Last menstrual period date 73.9 68.1 <.0001
 First ultrasound date 83.5 71.1 <.0001
 Gestational age at first ultrasound, in weeks 83.5 71.8 <.0001
 Gestational age at first ultrasound, in days (+0–6) 78.8 67.4 <.0001
 In vitro fertilizationb 100.0 100.0  
 Total prior admissions this pregnancyb 100.0 100.0  
 Smoking status 62.7 49.8 <.0001
 School years completed 32.9 31.6 <.0001
 Number of antenatal visits 96.9 90.4 <.0001
 Blood typeb 100.0 100.0  
 Maternal serum screening offeredb 100.0 100.0  
 Hepatitis B screening completedb 100.0 100.0  
 Hepatitis B screening resultsd 95.0 95.1 <.0001
 Group B Strep screening completedb 100.0 100.0  
 Group B Strep screening resultsd 83.6 82.6 <.0001
 HIV screening completedb 100.0 100.0  
Labour and delivery information    
 Cervical dilation on admission 53.9 65.4 <.0001
 Vaginal birth after cesarean delivery (VBAC) eligibled 16.4 16.4  
 VBAC attemptedb 100.0 100.0  
 Labour type - Spontaneous 59.9 60.8 <.0001
 Labour type - Augmentedc 35.9 33.5 <.0001
 Labour type - Induced 23.3 22.9 <.0001
 Labour type - None 16.9 16.3 <.0001
 Labour type - Unknown 0.0 0.0  
 Primary indication for inductionb,c 100.0 100.0  
 Labour positionb,c 100.0 100.0  
 Labour presentationb,c 100.0 100.0  
 Delivery positionb,c 100.0 100.0  
 Delivery presentationb,c 100.0 100.0  
 Primary indication for operative deliveryb,c 100.0 100.0  
 Cesarean delivery typeb,c 100.0 100.0  
 Cesarean incisionb,c 100.0 100.0  
 Baby delivery dateb,c 100.0 100.0  
 Baby delivery timeb,c 100.0 100.0  
 Delivery provider (delivered by)b,c 100.0 100.0  
 Rh immunoglobulin postpartum eligibleb 100.0 100.0  
 Postpartum infectionb 100.0 100.0  
  1. aProportions based on weighted data
  2. bMandatory fields
  3. cMulti-fetal pregnancies included one record per baby delivered (n = 1,129)
  4. dVariable only applies to subset of population