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) |
---|---|---|---|---|
Antenatal info | ||||
Maternal date of birth (Completed)c | 100.0 | 100.0 (-) | - | 100.0 (-) |
Last menstrual period date (Completed)c | 73.9 | 84.4 (81.6 – 87.0) | 78.3 (72.1 – 83.6) | 91.7 (89.4 – 93.6) |
First ultrasound date (Completed)c | 83.5 | 83.9 (78.9 – 88.2) | 93.8 (89.4 – 96.7) | 98.6 (97.4 – 99.3) |
In vitro fertilization (Yes) | 3.3 | 77.5 (61.4 – 89.2) | 98.7 (97.0 – 99.6) | 67.3 (43.5 – 86.0) |
Smoking status (current) | 10.7 | 63.9 (55.6 – 71.6) | 98.2 (97.1 – 99.0) | 81.3 (70.1 – 89.6) |
Maternal serum screening offered (Yes) | 81.3 | 91.4 (88.6 – 93.8) | 80.9 (72.5 – 87.6) | 95.4 (92.7 – 97.3) |
Hepatitis B screening completed (Yes) | 95.0 | 98.2 (97.2 – 98.9) | 64.0 (51.1 – 75.5) | 98.1 (96.7 – 99.0) |
Positive | 0.7 | 51.1 (18.1 – 83.4) | 99.8 (99.4 –100.0) | 70.7 (31.1 – 95.2) |
Group B Strep screening completed (Yes) | 83.6 | 93.0 (91.1 – 94.7) | 70.7 (63.3 – 77.4) | 94.2 (91.7 – 96.1) |
Positive | 23.8 | 91.1 (81.9 – 96.6) | 97.8 (95.3 – 99.2) | 92.8 (86.6 – 96.8) |
HIV screening completed (Yes) | 94.3 | 98.0 (97.0 – 98.8) | 72.3 (60.8 – 81.9) | 98.3 (97.3 – 99.0) |
Labour and delivery information | ||||
Vaginal birth after cesarean delivery (VBAC) eligible | 9.2 | 74.2 (63.4 – 83.2) | 98.0 (96.9 – 98.8) | 79.1 (68.7 – 87.3) |
VBAC attempted | 4.7 | 85.1 (64.4 – 96.3) | 100.0 (99.6 –100.0) | 100.0 (90.9 –100.0) |
Labour type - Spontaneous | 59.9 | 97.9 (96.4 – 98.8) | 94.4 (91.2 – 96.7) | 96.3 (94.6 – 97.6) |
Labour type - Augmented | 35.9 | 81.8 (75.9 – 86.8) | 93.5 (90.9 – 95.6) | 87.7 (83.2 – 91.3) |
Labour type - Induced | 23.3 | 93.9 (90.2 – 96.5) | 98.7 (97.7 – 99.3) | 95.5 (92.4 – 97.7) |
Labour type - None | 16.9 | 94.0 (89.9 – 96.8) | 99.5 (98.8 – 99.8) | 97.3 (94.0 – 99.1) |
Primary indication for induction | ||||
Post dates | 6.3 | 87.1 (76.2 – 94.3) | 99.0 (97.3 – 99.8) | 85.7 (70.9 – 94.8) |
Pre-labour rupture of membranes | 5.7 | 90.7 (76.2 – 97.8) | 98.7 (97.8 – 99.3) | 80.9 (69.8 – 89.4) |
Fetal compromise | 2.0 | 40.1 (22.4 – 59.8) | 99.2 (98.5 – 99.6) | 50.1 (29.3 – 71.0) |
Other maternal condition | 2.7 | 28.9 (8.5 – 58.7) | 99.5 (98.5 – 99.9) | 63.1 (18.2 – 95.0) |
Logistics | 0.1 | 100.0 (-) | 100.0 (-) | 100.0 (-) |
Fetal demise | 0.2 | 100.0 (-) | 100.0 (-) | 100.0 (-) |
Hypertension in pregnancy | 3.1 | 73.2 (59.2 – 84.6) | 100.0 (99.6 –100.0) | 99.0 (89.3 –100.0) |
Antepartum hemorrhage | 0.2 | 14.1 (0.0 – 90.4) | 100.0 (-) | 100.0 (-) |
Diabetes | 0.8 | 94.7 (63.7 –100.0) | 99.6 (99.0 – 99.9) | 65.3 (37.1 – 87.3) |
Other | 1.6 | 83.2 (59.2 – 96.1) | 98.3 (97.3 – 99.0) | 44.6 (27.6 – 62.6) |
Unknown | 0.4 | - | 99.7 (98.5 –100.0) | - |
Delivery presentation | ||||
Breech/NOS | 3.3 | 62.8 (47.9 – 76.2) | 98.9 (98.1 – 99.4) | 66.3 (51.7 – 78.9) |
Frank breech | 0.7 | 62.8 (30.1 – 88.6) | 99.6 (99.0 – 99.9) | 51.1 (20.8 – 80.8) |
Footling breech | 1.3 | 70.0 (38.2 – 91.8) | 99.6 (99.0 – 99.9) | 71.4 (49.0 – 88.1) |
Complete breech | 0.2 | - | 99.9 (99.4 –100.0) | - |
Incomplete breech | 0.0 | - | 99.9 (99.4 –100.0) | - |
Vertex | 89.8 | 98.0 (96.8 – 98.8) | 65.7 (51.5 – 78.1) | 96.2 (92.5 – 98.4) |
Transverse | 1.1 | 54.0 (26.3 – 80.0) | 99.6 (98.6 – 99.9) | 57.9 (27.3 – 84.6) |
Other | 0.0 | - | 100.0 (-) | - |
Unknown | 3.5 | 13.7 (4.7 – 29.0) | 98.5 (96.3 – 99.6) | 25.4 (9.5 – 48.2) |
Primary indication for operative delivery | ||||
Breech | 3.0 | 75.4 (58.5 – 88.0) | 99.9 (99.5 –100.0) | 95.3 (83.1 – 99.5) |
Dystocia/CPD | 7.3 | 50.9 (40.7 – 61.0) | 99.6 (99.0 – 99.9) | 90.5 (80.7 – 96.4) |
Nonreassuring Fetal Heart Rate | 5.9 | 85.9 (76.3 – 92.7) | 98.7 (97.6 – 99.4) | 81.1 (71.0 – 88.9) |
Repeat Cesarean Section | 4.4 | 79.3 (64.6 – 89.9) | 95.2 (92.5 – 97.1) | 43.0 (25.6 – 61.7) |
Abruptio Placenta | 0.3 | 87.3 (e) | 99.9 (99.5 –100.0) | 74.0 (27.0 – 98.1) |
Placenta Previa | 0.9 | 94.4 (69.6 – 99.9) | 100.0 (99.6 –100.0) | 96.3 (69.5 –100.0) |
Malposition/Malpresentation | 1.8 | 67.3 (42.4 – 86.6) | 98.4 (97.4 – 99.0) | 42.7 (20.2 – 67.7) |
Active Herpes | 0.0 | 100.0 (-) | 100.0 (-) | 100.0 (-) |
VBAC Declined/Maternal Request | 5.4 | 36.4 (17.6 – 58.8) | 99.0 (98.3 – 99.5) | 68.4 (48.6 – 84.3) |
Unknown | 0.0 | - | 99.8 (99.4 –100.0) | - |
Other | 6.8 | 71.5 (60.3 – 81.2) | 96.7 (95.0 – 98.0) | 61.7 (43.4 – 77.8) |
Cesarean delivery type | ||||
Primary Elective | 3.5 | 96.0 (83.8 – 99.7) | 99.8 (99.4 –100.0) | 95.3 (82.3 – 99.6) |
Primary Emergency | 17.7 | 99.1 (97.1 – 99.8) | 99.8 (99.2 –100.0) | 99.2 (97.3 – 99.9) |
Repeat Elective | 7.3 | 94.9 (86.7 – 98.8) | 99.2 (98.0 – 99.8) | 90.7 (76.0 – 97.9) |
Repeat Emergency | 7.3 | 90.2 (78.9 – 96.7) | 99.6 (99.0 – 99.9) | 94.7 (87.9 – 98.3) |
Baby delivery date (Completed)c | 100.0 | 100.0 (-) | - | 100.0 (-) |
Baby delivery time (Completed)c | 100.0 | 100.0 (-) | - | 100.0 (99.6 –100.0) |
Delivery provider (Delivered by)d,e | ||||
Family Physician | 33.6 | 82.9 (67.0 – 93.2) | 96.2 (93.6 – 98.0) | 91.8 (86.9 – 95.3) |
Obstetrician | 46.3 | 96.9 (95.2 – 98.2) | 89.6 (85.6 – 92.8) | 88.9 (84.9 – 92.2) |
Surgeon | 0.9 | 100.0 (-) | 100.0 (-) | 100.0 (-) |
Midwife | 9.0 | 97.4 (92.6 – 99.4) | 99.4 (98.8 – 99.8) | 94.5 (88.8 – 97.9) |
Nurse | 2.5 | 64.9 (35.7 – 87.6) | 99.8 (99.3 –100.0) | 89.4 (61.7 – 99.3) |
Rh immunoglobulin postpartum eligible (Yes) | 7.2 | 89.6 (80.5 – 95.4) | 99.8 (99.3 –100.0) | 97.0 (89.8 – 99.6) |
Postpartum infection (Yes) | 0.9 | 65.3 (37.1 – 87.3) | 99.2 (98.4 – 99.6) | 40.8 (21.4 – 62.6) |