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Table 1 Completeness and accuracy of the data (in %): comparison between MCD versus NIS, and between MCD versus SPE

From: Screening for inter-hospital differences in cesarean section rates in low-risk deliveries using administrative data: An initiative to improve the quality of care

1) Comparison between MCD* and NIS°: number and distribution of live born infants, according to residence
  2002 2004
Residence MCD NIS MCD NIS
Belgium (N = 111,609) (N = 111,225) (N = 116,142) (N = 115,618)
Flanders 53.1 53.7 53.0 53.9
Wallonia 33.2 33.8 32.4 32.9
Brussels 13.1 12.5 13.8 13.1
Abroad 0.6 - 0.8 -
2) Comparison between MCD and SPE + : perinatal characteristics
  2002 2004
Deliveries MCD NIS MCD NIS
  (N = 58,194) (N = 58,841) (N = 59,126) (N = 61,647)
Multiple gestation     
   twins 2.3 2.0 2.0 1.6
   triplets 0.1 0.0 0.1 0.0
Hypertension 5.5 4.9 5.8 4.8
Diabetes 1.6 1.2 2.1 1.4
Gestational age     
   20–31 weeks 1.0 1.0 1.1 1.1
   32–36 weeks 6.1 6.3 6.4 6.5
   >= 37 weeks 92.9 92.7 92.8 92.5
Labor induction 19.4 30.1 17.7 27.6
Epidural anesthesia 48.3 63.2 51.3 61.6
Cesarean delivery 18.1 17.7 18.5 18.3
Previous cesarean 4.6 7.6 5.7 8.2
Births MCD NIS MCD NIS
  (N = 58,529) (N = 60,048) (N = 59,110) (N = 62,657)
Presentation     
   breech 4.5 5.4 4.5 5.2
   transverse 0.5 0.6 0.4 0.5
Type of birth     
   spontaneous 72.5 69.9 71.3 70.2
   vacuum 8.5 10.3 9.1 9.7
   forceps 0.6 1.1 0.5 0.9
   cesarean 17.9 18.3 18.2 18.9
   vaginal breech 0.5 0.4 0.4 0.3
Weight at birth     
   <1500 g 0.8 1.2 0.8 1.1
   1500–2499 g 5.6 6.2 5.4 5.8
   >= 2500 g 93.3 92.7 93.7 93.1
Gender     
   male 51.4 51.4 51.4 51.4
   female 48.6 48.6 48.6 48.6
Congenital anomalies 3.0 1.8 3.1 1.6
Admission into specialized unit 17.9 17.9 17.9 17.8
  1. Sources
  2. *MCD: Minimal Clinical Data
  3. °NIS: National Institute of Statistics
  4. +SPE: Studiecentrum Perinatale Epidemiologie