Table 1 Descriptive statistics for the case study of multicategory outcome prediction: original development data of model M4 (n = 197), the temporal updating data at SGH (n = 1422), and the geographical updating data at QCCH (n = 873)
From: Validation and updating of risk models based on multinomial logistic regression
|  | Original development data (SGH) n = 197 | Temporal updating (SGH) n = 1422 | Geographical updating (QCCH) n = 873 |
|---|---|---|---|
Age (years) | 30 (25–33) | 31 (26–35) | 32 (27–32) |
Initial hCG (IU/L) | 265 (76–618) | 410 (154–941) | 530 (197–1563) |
hCG ratio | 0.80 (0.33–1.99) | 1.04 (0.39–2.10) | 0.65 (0.34–1.49) |
Initial progesterone (nmol/L) | 17 (4–66) | 21 (4–61) | 9 (3–34) |
Outcome, n (%) | |||
 Failed | 109 (55%) | 717 (50%) | 502 (58%) |
 IUP | 76 (39%) | 577 (41%) | 245 (28%) |
 Ectopic | 12 (6%) | 128 (9%) | 126 (14%) |