Table 2.
Crude incidence and 30-day case-fatality rates as well as adjusted rate ratios with 95% confidence intervals for subarachnoid haemorrhage and its 30-day case fatality by geographical regions of NZ.
| SAH incidence |
SAH case fatality |
|||||
|---|---|---|---|---|---|---|
| Crude incidence per 100,000 person-years (95% CI) | Partly-adjusteda RR (95% CI) | Fully-adjustedb RR (95% CI) | Crude 30-day case fatality in % (95% CI) | Partly-adjusteda RR (95% CI) | Fully-adjustedb RR (95% CI) | |
| By DHBs | ||||||
| Northland (R) | 9.4 (8.3–10.5) | 1.37 (1.18–1.58) | 1.15 (0.99–1.33) | 42.1 (36.2–48.0) | 1.11 (0.94–1.30) | 1.07 (0.91–1.25) |
| Waitemata (U) | 6.2 (5.7–6.7) | [Reference] | [Reference] | 41.1 (37.1–45.1) | [Reference] | [Reference] |
| Auckland (U) | 5.9 (5.3–6.4) | 1.02 (0.90–1.37) | 1.02 (0.90–1.15) | 43.6 (39.1–48.1) | 1.06 (0.92–1.20) | 1.06 (0.93–1.21) |
| Counties Manukau (U) | 6.8 (6.2–7.3) | 1.22 (1.09–1.37) | 1.14 (1.01–1.28) | 44.3 (40.3–48.3) | 1.12 (0.99–1.28) | 1.09 (0.96–1.25) |
| Waikato (U) | 7.1 (6.5–7.7) | 1.11 (0.98–1.25) | 1.01 (0.89–1.14) | 48.9 (44.4–53.4) | 1.21 (1.06–1.37) | 1.17 (1.03–1.34) |
| Lakes (R) | 8.0 (6.7–9.3) | 1.26 (1.06–1.52) | 1.05 (0.88–1.26) | 45.3 (37.3–53.3) | 1.14 (0.94–1.38) | 1.07 (0.88–1.30) |
| Bay of Plenty (U) | 8.0 (7.1–8.9) | 1.16 (1.01–1.33) | 1.03 (0.89–1.18) | 45.9 (40.3–51.5) | 1.12 (0.97–1.30) | 1.09 (0.94–1.26) |
| Tairawhiti (R) | 9.6 (7.5–11.7) | 1.58 (1.25–1.99) | 1.17 (0.93–1.48) | 51.9 (41.0–62.8) | 1.39 (1.13–1.73) | 1.30 (1.04–1.61) |
| Hawke's Bay (R) | 7.8 (6.8–8.8) | 1.14 (0.98–1.34) | 1.02 (0.87–1.19) | 44.3 (37.8–50.8) | 1.10 (0.93–1.39) | 1.06 (0.90–1.26) |
| Taranaki (R) | 6.9 (5.7–8.0) | 0.99 (0.82–1.19) | 0.93 (0.77–1.12) | 39.9 (31.7–48.1) | 0.97 (0.79–1.20) | 1.00 (0.81–1.23) |
| MidCentral (R) | 6.1 (5.2–7.0) | 0.97 (0.83–1.15) | 0.91 (0.77–1.07) | 51.0 (44.0–58.0) | 1.20 (1.02–1.41) | 1.19 (1.01–1.40) |
| Whanganui (R) | 8.8 (7.0–10.5) | 1.27 (1.02–1.57) | 1.13 (0.91–1.39) | 60.4 (50.9–69.9) | 1.39 (1.17–1.66) | 1.36 (1.14–1.62) |
| Capital & Coast (U) | 5.4 (4.7–6.0) | 0.88 (0.77–1.02) | 0.86 (0.75–1.00) | 40.9 (35.1–46.7) | 1.01 (0.86–1.19) | 1.01 (0.86–1.18) |
| Hutt Valley (U) | 6.1 (5.1–7.0) | 0.98 (0.82–1.16) | 0.92 (0.77–1.10) | 39.7 (32.0–47.4) | 1.04 (0.84–1.27) | 1.02 (0.83–1.25) |
| Wairarapa (R) | 6.1 (4.4–7.9) | 0.81 (0.59–1.10) | 0.77 (0.56–1.04) | 41.3 (27.1–55.5) | 1.05 (0.76–1.46) | 1.03 (0.73–1.45) |
| Nelson Marlborough (R) | 7.9 (6.8–9.0) | 1.06 (0.90–1.25) | 1.05 (0.89–1.24) | 54.0 (47.1–60.9) | 1.25 (1.07–1.45) | 1.26 (1.08–1.46) |
| West Coast (R) | 7.6 (5.3–9.8) | 1.06 (0.78–1.44) | 1.04 (0.76–1.41) | 52.3 (37.5–67.1) | 1.24 (0.94–1.66) | 1.24 (0.92–1.67) |
| Canterbury (U) | 6.9 (6.3–7.4) | 1.01 (0.90–1.13) | 1.02 (0.91–1.14) | 44.8 (40.9–48.7) | 1.06 (0.93–1.19) | 1.05 (0.93–1.19) |
| South Canterbury (R) | 7.1 (5.4–8.7) | 0.93 (0.73–1.19) | 0.94 (0.73–1.20) | 47.2 (35.7–58.7) | 1.14 (0.89–1.46) | 1.15 (0.90–1.47) |
| Southern (U) | 7.0 (6.3–7.7) | 1.06 (0.93–1.21) | 1.05 (0.93–1.20) | 52.9 (47.9–57.9) | 1.28 (1.12–1.45) | 1.29 (1.13–1.46) |
| By rurality | ||||||
| Urban regions combined | 6.6 (6.4–6.8) | [Reference] | [Reference] | 44.9 (43.3–46.5) | [Reference] | [Reference] |
| Rural regions combined | 7.8 (7.4–8.2) | 1.08 (1.01–1.41) | 1.01 (0.95–1.07) | 47.5 (45.0–50.0) | 1.06 (1.00–1.13) | 1.05 (0.99–1.11) |
CI, confidence interval; DHB, district health board; R, rural region; RR, rate ratio; SAH, subarachnoid haemorrhage; U, urban region.
a
Partly-adjusted = adjusted for age and sex.
b
Fully-adjusted = adjusted for age, sex, and ethnicity.