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| Univariate analysis | Multivariate analysis Poisson regression Model 1 | Multivariate analysis Poisson regression Model 2 | |||||
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| ObGyn triage | ED | ObGyn triage &ED |
| Incidence Rate Ratio (IRR, 95% CI) |
| Incidence Rate Ratio (IRR, 95% CI) |
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| ˚N = 1531 | ˚N = 5373 | ˚N=1000 | P Value | ˚N = 7904 | P Value | ˚N = 7904 | P Value |
| ObGyn triage | ? | ? | ? |
| 1§ | ? | ? | ? |
| ED | ? | ? | ? |
| 0.87 (0.83 - 0.9) | <0.001¶ | ? | ? |
| ObGyn triage & ED | ? | ? | ? |
| 1.06 (1.01 - 1.2) | 0.01 | ? | ? |
| Race |
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| <0.01* |
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| Caucasian | 1176 (76.8) | 4916 (91.5) | 734 (73.4) |
| ? | ? | ? | ? |
| Other | 355 (23.2) | 457 (8.5) | 266 (26.6) |
| ? | ? | ? | ? |
| Age |
|
|
| <0.01** |
|
| ? | ? |
| <12.4 | 3 (0.2) | 150 (2.8) | 3 (0.3) |
| 1§ | ? | 1§ | ? |
| 12.4 - 51.4 | 1510 (98.62) | 2048 (38.12) | 904 (90.4) |
| 1.1 (0.9 - 1.2) | 0.1 | 1.1 (0.9 - 1.2) | 0.1¶ |
| ≥51.4 | 18 (1.18) | 3175 (59.08) | 93 (9.3) |
| 1.12 (1.007 - 1.2) | 0.04¶ | 1.11 (1.006 - 1.2) | 0.04 |
| Reason for referral |
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| Pregnancy ≤ 12 weeks | 374 (24.4) | 12 (0.22) | 0 (0) |
| ? | ? | 1.2 (1.1 - 1.3) | <0.01¶ |
| Pregnancy > 12 weeks | 949 (62) | 7 (0.13) | 0 (0) |
| ? | ? | 1.11 (1.02 - 1.2) | 0.01¶ |
| Vaginal bleeding | 82 (5.4) | 2 (0.04) | 0 (0) |
| ? | ? | 1 (0.9 - 1.2) | 0.5¶ |
| Abdominal pain | 59 (3.8) | 283 (5.27) | 0 (0) |
| ? | ? | 1§ | ? |
| Other | 67 (4.4) | 5069 (94.34) | 0 (0) |
| ? | ? | 1 (0.9 - 1.1) | 0.6¶ |
| Multiple Causes | 0 (0) | 0 (0) | 1000 (100) |
| ? | ? | 1.2 (1.1 - 1.3) | <0.01¶ |
| Time |
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| <0.01* |
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| Day (8 am to 8 pm) | 477 (31.2) | 2594 (48.3) | 340 (34) |
| 1§ | ? | 1§ | ? |
| Night (8 pm to 8 am) | 133 (8.7) | 441 (8.2) | 76 (7.6) |
| 0.95 (0.89 - 1) | 0.08 | 0.95 (0.89 - 1) | 0.08 |
| Day & Night | 921 (60.1) | 2338 (43.5) | 584 (58.4) |
| 1.23 (1.19 - 1.26) | <0.001 | 1.22 (1.19 - 1.26) | <0.01 |
| Weekday/Holiday |
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| <0.01* |
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| Weekday | 634 (41.4) | 2292 (42.7) | 370 (37) |
| 1§ | ? | 1§ | ? |
| Holiday | 106 (6.9) | 479 (8.9) | 72 (7.2) |
| 0.94 (0.88 - 0.99) | 0.04¶ | 0.94 (0.89 - 0.99) | 0.03¶ |
| Weekday & Holyday | 791 (51.7) | 2602 (48.4) | 558 (55.8) |
| 1.23 (1.2 - 1.27) | <0.001¶ | 1.23 (1.2 - 1.27) | <0.01¶ |
| Season |
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| <0.01* |
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| Winter | 188 (12.3) | 471(8.8) | 51 (5.1) |
| 1§ | ? | 1§ | ? |
| Spring | 208 (13.6) | 498 (9.3) | 51 (5.1) |
| 0.9 (0.9 - 1.1) | 0.9 | 1 (0.9 - 1.1) | 0.9 |
| Summer | 186 (12.1) | 484 (9) | 57 (5.7) |
| 1 (0.9 - 1.1) | 0.9 | 1 (0.9 - 1.1) | 0.9 |
| Fall | 191 (12.5) | 432 (8) | 58 (5.8) |
| 1 (0.9 - 1.1) | 0.9 | 1 (0.9 - 1.1) | 0.9 |
| Multiple seasons | 758 (49.5) | 3488 (64.9) | 783 (78.3) |
| 1.2 (1.1 - 1.3) | <0.001 | 1.24 (1.18 - 1.31) | <0.01 |