Table 6 Validity of common categorical variables from newborn charts (n = 1,142)
From: Validating the British Columbia Perinatal Data Registry: a chart re-abstraction study
Variable name | Prevalencea,b | Sensitivity (95 % CI)a | Specificity (95 % CI)a | Positive predictive value (95 % CI) |
|---|---|---|---|---|
Mother information | ||||
Mother’s date of birth (Completed)c | 99.3 | 100.0 (-) | - | 99.3 (98.6 – 99.7) |
Newborn information | ||||
Date of birth (Yes)c | 100 | 100.0 (-) | - | 100.0 (-) |
Sex | ||||
Female | 51.7 | 99.9 (99.2 –100.0) | 99.7 (98.9 –100.0) | 99.7 (98.9 –100.0) |
Male | 48.1 | 99.7 (98.9 –100.0) | 99.5 (98.6 – 99.9) | 99.5 (98.5 – 99.9) |
Number of births in pregnancy | ||||
1 | 94.9 | 100.0 (-) | 100.0 (-) | 100.0 (-) |
2 | 5.1 | 100.0 (-) | 100.0 (-) | 100.0 (-) |
Stillbirth timing | ||||
N/A (live birth) | 98.5 | 100.0 (-) | 100.0 (-) | 100.0 (-) |
Prior to onset of labour | 0.5 | 85.3 (26.6 –100.0) | 99.7 (99.2 – 99.9) | 59.8 (14.5 – 94.6) |
After onset of labour | 0 | - | 99.9 (99.4 –100.0) | - |
Unknown time of stillbirth | 0.9 | 53.2 (d) | 99.9 (99.5 –100.0) | 86.2 (d) |
Meconium present | 18.3 | 76.9 (62.4 – 87.8) | 97.6 (96.5 – 98.5) | 87.9 (81.9 – 92.5) |
Suction - Oropharynx | 18.8 | 58.7 (40.6 – 75.1) | 97.4 (93.9 – 99.2) | 84.1 (76.3 – 90.2) |
Resuscitative drugs | 1.6 | 64.5 (48.8 – 78.2) | 99.8 (99.3 –100.0) | 81.7 (65.8 – 92.3) |
Resuscitation - Oxygen | 12.9 | 74.8 (61.4 – 85.5) | 99.3 (98.6 – 99.8) | 94.3 (86.7 – 98.3) |
Breastfeeding initiation | ||||
0 to ≤1h | 45.7 | 70.9 (61.6 – 79.0) | 80.9 (72.9 – 87.3) | 75.7 (69.4 – 81.3) |
>1 to ≤24h | 42.6 | 52.6 (28.7 – 75.7) | 81.8 (77.8 – 85.4) | 68.2 (61.9 – 74.0) |
>24h | 2.9 | 18.1 (6.8 – 35.7) | 98.8 (98.0 – 99.4) | 31.7 (20.2 – 45.1) |
Unknown | 4.1 | 46.9 (31.0 – 63.3) | 82.9 (55.1 – 97.0) | 10.4 (5.6 – 17.4) |
N/A (did not breastfeed, died, or stillborn) | 4.8 | 68.1 (60.2 – 75.3) | 98.7 (97.8 – 99.3) | 73.1 (63.8 – 81.1) |
Newborn feeding | ||||
Breast milk | 63.4 | 90.7 (87.9 – 93.0) | 78.8 (74.7 – 82.5) | 88.1 (85.2 – 90.7) |
Formula | 2.4 | 59.6 (42.9 – 74.8) | 98.8 (97.9 – 99.3) | 55.0 (41.0 – 68.4) |
Breast milk & formula | 30.6 | 72.7 (67.4 – 77.7) | 90.5 (88.1 – 92.5) | 77.1 (72.6 – 81.2) |
Unknown | 2.3 | 75.8 (67.0 – 83.3) | 100.0 (99.6 –100.0) | 98.2 (90.2 –100.0) |
N/A (transferred to another hospital, died, or stillborn) | 1.2 | 73.4 (d) | 99.5 (98.9 – 99.8) | 63.1 (51.4 – 73.8) |
Discharge to | ||||
Home | 95.5 | 99.7 (99.1 –100.0) | 94.6 (82.6 – 99.2) | 99.7 (99.1 –100.0) |
Other Hospital | 2.3 | 100.0 (-) | 100.0 (-) | 100.0 (-) |
Adoption | 0 | 100.0 (-) | 99.8 (99.3 –100.0) | 3.0 (d) |
Foster | 0.6 | 69.2 (29.6 – 94.7) | 100.0 (99.6 –100.0) | 90.4 (59.9 – 99.6) |
Death/Stillbirth | 1.5 | 100.0 (-) | 100.0 (-) | 100.0 (-) |
Unknown | 0.1 | - | 100.0 (-) | - |