From: Data accuracy in the Ontario birth Registry: a chart re-abstraction study
Data Element | Coding | Matched n/927 (%) | Kappa (κ) (%) | 95% CI | ICC (%) | 95% CI |
---|---|---|---|---|---|---|
SITE ID | ||||||
Maternal chart ID | ||||||
Baby chart ID | ||||||
 1. Episiotomyd | None Medio-lateral Midline Medial Unknown | 847 (91.4) | 0.67 | 0.61–0.73 |  |  |
 2. Diabetes and Pregnancy (17 possible pick list choices - MSb) | Yes No Unknown | 855 (92.2) | 0.79 | 0.72–0.86 |  |  |
 3. Intention to breastfeed | Yes No | 757 (81.7) | 0.30 | 0.22–0.37 |  |  |
 4. Newborn feeding at discharge | Formula only Combination Breastmilk only Not applicable Other Unknown | 706 (76.2) | 0.68 | 0.64–0.73 |  |  |
 5. Newborn discharged or transferred tod | Home Child and family services apprehension Transfer to NICU/SCN other hospital Transfer to NICU/SCN same hospital Transfer to pediatric unit | 859 (92.7) | 0.46 | 0.25–0.68 |  |  |
 6. Hypertension during pregnancy | None Eclampsia Gestational hypertension HELLP Preeclampsia Pre-existing hypertension with superimposed preeclampsia Unknown | 893 (96.3) | 0.58 | 0.46–0.70 |  |  |
 7. Group B Strep screening results | Done, negative result Done, positive result Result unknown Urine positive for GBS Not done Unknown if screened | 739 (79.7) | 0.75 | 0.71–0.79 |  |  |
 8. Group B Strep screening not done reasona | Declined screening Other Previous baby with GBS disease Urine positive for GBS | 880 (94.9) |  |  |  |  |
 9. Labour typed | Spontaneous Induced No labour | 908 (98) | 0.61 | 0.57–0.65 |  |  |
 10. Mother resides with cigarette smoker at time of prenatal visit | Yes No Unknown | 914 (98.6) | 0.68 | 0.64–0.71 |  |  |
 11. Mother resides with cigarette smoker at time of labour /admission | Yes No Unknown | 780 (84.1) | 0.67 | 0.64–0.71 |  |  |
 12. Maternal cigarette smoking at prenatal visit | None <10 /day 10-20 /day >20/day Unknown | 835 (90.1) | 0.56 | 0.49–0.62 |  |  |
 13. Maternal cigarette smoking at time of labourd | None <10 /day 10-20 /day >20/day Unknown | 726 (78.3) | 0.58 | 0.50–0.65 |  |  |
 14. Type of birthd | Spontaneous vaginal Assisted vaginal Induced or spontaneous labour CS No labour CS | 876 (94.5) | 0.89 | 0.79–1.00 |  |  |
 15. Indications for caesarean section (28 possible pick list choices – MSb)d | Yes No | 901 (97.2) | 0.92 | 0.89–0.95 |  |  |
 16. Maternal Health Conditions (79 possible pick list choices – MSb) | Yes No | 916 (98.8) | 0.75 | 0.61–0.89 |  |  |
 17. Complications of Pregnancy (24 possible pick list choices – MSb) | Yes No | 918 (99) | 0.79 | 0.65–0.92 |  |  |
 18. Pain relief measures during newborn screening or serum bilirubin | Breastfeeding Skin to Skin Sucrose Other None Unknown | 834 (90) | 0.50 | 0.41–0.59 |  |  |
 19. Labour and birth complications (21 possible pick list choices – MSb) | Yes No | 913 (98.5) | 0.88 | 0.81–0.94 |  |  |
 20. Indications for induction of labour (23 possible pick list choices – MSb)d | Yes No | 851 (91.8) | 0.76 | 0.70–0.80 |  |  |
 21. Fetal surveillanced | Admission EFM strip Auscultation Intrapartum EFM (external) Intrapartum EFM (internal) No monitoring Unknown | 922 (99.5) | 0.95 | 0.91–0.99 |  |  |
 22. Number of fetusesd | Number (0–8) Unknown | 925 (99.8) |  |  | 0.90 | 0.89–0.91 |
 23. Number of previous cesarean births c, d | Number (0–6) Unknown | 909 (98.1) |  |  | 0.63 | 0.59–0.67 |
 24. Maternal pre-pregnancy weight | Weight | 887 (95.7) |  |  | 0.82 | 0.79–0.84 |
 25. Maternal height | Height | 925 (99.8) |  |  | 0.54 | 0.50–0.59 |
 26. Maternal weight at end of pregnancy | Weight | 924 (99.7) |  |  | 0.49 | 0.44–0.55 |
 27. Estimated date of birth | DD-MM-YYY | 605 (65.3) |  |  |  |  |
 28. Date of birth | DD-MM-YYY | 877 (94.6) |  |  |  |  |
 29. Gestational age at birthc, d | Weeks | 771 (83.2) |  |  |  |  |
Gestational age at birthc | Days | 527 (56.9) | Â | Â | Â | Â |