Table 2.
Crude Mortality Rates and Standardized Mortality Ratios, by Key Strata
| Variable | No. Deaths | Person-Years of Follow-up | Crude Mortality Rate, per 1000 Person-Years (95% CI) | Standardized Mortality Ratio (95% CI) |
|---|---|---|---|---|
| Overall | 493 | 9913 | 49.7 (45.4, 54.3) | 23.8 (21.7, 25.9) |
| Gender | ||||
| Female | 152 | 3359 | 45.3 (38.3, 53.0) | 44.6 (37.8, 52.3) |
| Male | 341 | 6554 | 52.0 (46.7, 57.9) | 19.7 (17.6, 21.9) |
| Age, y | ||||
| 0–29 | 24 | 803 | 29.9 (19.2, 44.5) | 48.8 (31.3, 72.6) |
| 30–39 | 140 | 3273 | 42.8 (36.0, 50.5) | 43.6 (36.6, 51.4) |
| 40–49 | 192 | 4097 | 46.9 (40.5, 54.0) | 23.8 (20.5, 27.4) |
| ≥50 | 137 | 1741 | 78.7 (66.1, 93.0) | 15.3 (12.8, 18.0) |
| Calendar year | ||||
| 1996–1999 | 39 | 1139 | 34.2 (24.3, 46.8) | 19.2 (13.7, 26.3) |
| 2000–2004 | 194 | 3581 | 54.2 (46.8, 62.4) | 29.3 (25.3, 33.7) |
| 2005–2010 | 260 | 5193 | 50.1 (44.2, 56.5) | 21.5 (18.9, 24.3) |
| Aboriginal | ||||
| No | 366 | 7284 | 50.2 (45.2, 55.7) | 22.3 (20.0, 24.7) |
| Yes | 127 | 2629 | 48.3 (40.3, 57.5) | 29.5 (24.6, 35.1) |
| OST episode no. | ||||
| 0 | 219 | 4603 | 47.6 (41.5, 54.3) | 19.2 (16.8, 22.0) |
| 1 | 81 | 1892 | 42.8 (34.0, 53.2) | 22.4 (17.8, 27.8) |
| 2 | 70 | 1278 | 54.8 (42.7, 69.2) | 28.6 (22.3, 36.1) |
| ≥3 | 123 | 2140 | 57.5 (47.8, 68.6) | 37.1 (30.9, 44.3) |
| Off OST | ||||
| Overall | 404 | 5934 | 68.1 (61.6, 75.1) | 30.0 (27.1, 33.1) |
| Never | 198 | 4352 | 45.5 (39.4, 52.3) | 18.1 (15.7, 20.8) |
| ≤2 wk | 62 | 57 | 1094.9 (839.4, 1403.6) | 716.4 (549.2, 918.3) |
| 3–4 wk | 17 | 56 | 305.9 (178.2, 489.7) | 203.0 (118.2, 325.0) |
| >4 wk | 127 | 1469 | 86.4 (72.1, 102.9) | 53.9 (44.9, 64.1) |
| On OST | ||||
| Overall | 89 | 3979 | 22.4 (18.0, 27.5) | 12.2 (9.8, 15.0) |
| ≤2 wk | 4 | 52 | 76.9 (21.0, 196.9) | 51.7 (14.1, 132.3) |
| 3–4 wk | 0 | 48 | 0.0 (0.0, 77.6) | 0.0 (0.0, 52.0) |
| >4 wk | 85 | 3880 | 21.9 (17.5, 27.1) | 11.9 (9.5, 14.7) |
| HAART episode no. | ||||
| 1 | 126 | 3315 | 38 (31.7, 45.3) | 19.1 (15.9, 22.7) |
| 2 | 103 | 2093 | 49.2 (40.2, 59.7) | 24.1 (19.7, 29.3) |
| ≥3 | 264 | 4505 | 58.6 (51.7, 66.1) | 26.7 (23.6, 30.1) |
| Off HAART | ||||
| Overall | 306 | 3855 | 79.4 (70.7, 88.8) | 45.2 (40.3, 50.6) |
| ≤2 wk | 56 | 208 | 269.1 (203.3, 349.4) | 142.2 (107.4, 184.6) |
| 3–4 wk | 24 | 206 | 116.8 (74.8, 173.8) | 61.8 (39.6, 92.0) |
| >4 wk | 226 | 3441 | 65.7 (57.4, 74.8) | 37.7 (33.0, 43.0) |
| On HAART | ||||
| Overall | 187 | 6058 | 30.9 (26.6, 35.6) | 13.4 (11.5, 15.4) |
| ≤2 wk | 11 | 250 | 44.0 (22.0, 78.8) | 23.1 (11.6, 41.4) |
| 3–4 wk | 10 | 245 | 40.8 (19.5, 75.0) | 21.4 (10.3, 39.4) |
| >4 wk | 166 | 5563 | 29.8 (25.5, 34.7) | 12.7 (10.9, 14.8) |
| OST and HAART | ||||
| Off OST and HAART | 258 | 2455 | 105.1 (92.6, 118.7) | 58.4 (51.5, 65.9) |
| On OST only | 48 | 1400 | 34.3 (25.3, 45.5) | 20.4 (15.1, 27.1) |
| On HAART only | 146 | 3478 | 42.0 (35.4, 49.4) | 16.1 (13.6, 19.0) |
| On OST and HAART | 41 | 2580 | 15.9 (11.4, 21.6) | 8.3 (6.0, 11.3) |
Abbreviations: CI, confidence interval; HAART, highly active antiretroviral therapy; OST, opioid substitution treatment.