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Table 2 Consistency of reporting of anaemia and blood related disorders in coded hospital data compared to obstetric data from two tertiary hospitals, New South Wales, 2011–2015, by hospital

From: Validation of anaemia, haemorrhage and blood disorder reporting in hospital data in New South Wales, Australia

  Hospital one Hospital two
Sensitivity
(95% CI)
Specificity
(95% CI)
Sensitivity
(95% CI)
Specificity
(95% CI)
Anaemia (nutritional or haemolytic) 10.8 (8.3–13.7) 96.8 (96.5–97.2) 14.9 (12.8–17.3) 96.3 (96.1–96.5)
Nutritional anaemia 5.7 (3.9–8.1) 99.5 (99.3–99.6) 7.7 (6.1–9.7) 99.4 (99.2–99.5)
Haemolytic anaemia 25.0 (12.1–42.2) 99.9 (99.8–99.9) 13.5 (7.6–21.6) 99.9 (99.8–99.9)
Iron deficiency anaemia 9.3 (6.9–12.3) 96.8 (96.4–97.1) 14.6 (12.3–17.2) 96.2 (96.0–96.5)
Anaemia (Hb < 110 g/L) in pregnancy 7.3 (6.2–8.6) 97.3 (96.9–97.6) 8.0 (7.3–8.8) 96.8 (96.5–97.0)
B12 deficiency anaemia 8.3 (1.0–27.0) 100.0 (99.9, 100.0) 3.4 (0.7–9.5) 100.0 (100.0, 100.0)
Any bleeding before birth 70.0 (65.5–74.2) 97.6 (97.3–97.9) 61.0 (56.8–65.2) 99.1 (99.0–99.2)
Antepartum haemorrhage 59.8 (54.6–64.8) 97.9 (97.6–98.1) 53.3 (48.4–58.1) 99.2 (99.1–99.3)
Intrapartum haemorrhage 38.3 (27.7–49.7) 99.7 (99.6–99.8) 45.9 (34.3–57.9) 99.9 (99.8–99.9)
Postpartum haemorrhage (PPH) 78.3 (76.4–80.1) 98.7 (98.5–99.0) 86.4 (85.0–87.8) 98.7 (98.5–98.8)
PPH following caesarean section 59.4 (55.5–63.1) 99.1 (98.7–99.4) 70.3 (66.0–74.3) 98.0 (97.6–98.3)
PPH following vaginal birth 88.2 (86.3–90.0) 98.5 (98.2–98.8) 90.6 (89.2–91.9) 99.0 (98.8–99.1)
Red Blood cell transfusion 92.0 (86.1–95.9) 99.8 (99.7–99.9) 92.5 (89.6–94.8) 99.5 (99.4–99.6)
Placental abruption 70.8 (55.9–83.0) 99.7 (99.6–99.8) 66.7 (55.1–76.9) 99.9 (99.8–99.9)
Placenta praevia 79.2 (69.7–86.8) 99.6 (99.5–99.7) 82.2 (76.7–86.8) 99.7 (99.7–99.8)
Placenta accreta 60.0 (14.7–94.7) 99.7 (99.5–99.8) 70.6 (44.0–89.7) 99.9 (99.9–99.9)
Thalassaemia 4.7 (2.1–9.1) 100.0 (100.0, 100.0) 1.9 (0.9–3.4) 100.0 (100.0, 100.0)
Platelet disorders 28.3 (16.0–43.5) 99.4 (99.2–99.5) 23.1 (14.9–33.1) 99.5 (99.4–99.6)
Coagulation disorders 14.0 (7.4–23.1) 99.8 (99.7–99.9) 9.5 (4.7–16.8) 99.8 (99.8–99.9)
Hysterectomy 100.0 (59.0, 100.0) 100.0 (99.9, 100.0) 94.4 (72.7–99.9) 100.0 (100.0, 100.0)
  1. Hb haemoglobin, derived from pathology in ObstetriX data