Table 2.
Unadjusted and age, sex and year standardised rates of first admission for self-harm in South East London, 2007–2016, by individual and lower super output area characteristics
| First admissions (%) | Person years (1000s) | Unadjusted rate/10,000 (95% CI) | Unadjusted RR (95% CI) | Standardised† RR (95% CI) | |
|---|---|---|---|---|---|
| Total | 8327 | 9297 | 9.0 (8.8–9.2) | ||
| Female | p < 0.0001b | ||||
| 15–19 | 1244 (24.6) | 317 | 39.3 (37.2–41.5) | 1 | |
| 20–24 | 851 (16.9) | 449 | 18.9 (17.7–20.3) | 0.48 (0.44–0.53) | |
| 25–34 | 1102 (21.8) | 1216 | 9.1 (8.5–9.6) | 0.23 (0.21–0.25) | |
| 35–64 | 1648 (32.6) | 2147 | 7.7 (7.3–8.1) | 0.20 (0.18–0.21) | |
| 65+ | 205 (4.1) | 620 | 3.3 (2.9–3.8) | 0.08 (0.07–0.10) | |
| Male | p < 0.0001b | ||||
| 15–19 | 293 (8.9) | 319 | 9.2 (8.2–10.3) | 1 | |
| 20–24 | 459 (14.0) | 413 | 11.1 (10.1–12.2) | 1.21 (1.05–1.40) | |
| 25–34 | 809 (24.7) | 1206 | 6.7 (6.3–7.2) | 0.73 (0.64–0.84) | |
| 35–64 | 1555 (47.5) | 2126 | 7.3 (7.0-7.7) | 0.80 (0.70–0.90) | |
| 65+ | 161 (4.9) | 482 | 3.3 (2.9–3.9) | 0.36 (0.30–0.44) | |
| Year of admission‡ | p = 0.32a | ||||
| 2007/2008 | 2029 (20.7) | 1907 | 10.6 (10.2–11.1) | 1 | |
| 2009/2010 | 2090 (21.4) | 1959 | 10.7 (10.2–11.1) | 1.00 (0.94–1.07) | |
| 2011/2012 | 2106 (21.5) | 2023 | 10.4 (10.0-10.9) | 0.98 (0.92–1.04) | |
| 2013/2014 | 2229 (22.8) | 2079 | 10.7 (10.3–11.2) | 1.01 (0.95–1.07) | |
| 2015/2016 | 1335 (13.6) | 1330 | 10.0 (9.5–10.6) | 0.94 (0.88–1.01) | |
| Hospital | p < 0.0001a | p < 0.0001a | |||
| KCH | 1398 (16.8) | 2049 | 6.8 (6.5–7.2) | 1 | 1 |
| UHL | 1911 (22.9) | 1850 | 10.3 (9.9–10.8) | 1.51 (1.41–1.62) | 1.52 (1.42–1.63) |
| CUH | 2544 (30.6) | 2320 | 11.0 (10.5–11.4) | 1.61 (1.51–1.72) | 1.64 (1.54–1.75) |
| STH | 1217 (14.6) | 1603 | 7.6 (7.2–8.0) | 1.11 (1.03–1.20) | 1.08 (1.00-1.16) |
| Other | 1257 (15.1) | 1476 | 8.5 (8.1–9.0) | 1.25 (1.16–1.35) | 1.26 (1.17–1.36) |
| IMD | p < 0.0001b | p < 0.0001b | |||
| Lowest quartile | 1492 (17.9) | 2251 | 6.6 (6.3–7.0) | 1 | 1 |
| 2 | 1898 (22.8) | 2431 | 7.8 (7.5–8.2) | 1.18 (1.10–1.26) | 1.11 (1.04–1.19) |
| 3 | 2349 (28.2) | 2347 | 10.0 (9.6–10.4) | 1.51 (1.42–1.61) | 1.42 (1.33–1.51) |
| Highest quartile | 2588 (31.1) | 2268 | 11.4 (11.0-11.9) | 1.72 (1.62–1.83) | 1.58 (1.49–1.69) |
| Social fragmentation | p = 0.002b | p < 0.0001b | |||
| Lowest quartile | 2011 (24.2) | 2122 | 9.5 (9.1–9.9) | 1 | 1 |
| 2 | 1976 (23.7) | 2188 | 9.0 (8.6–9.4) | 0.95 (0.90–1.01) | 0.93 (0.87–0.99) |
| 3 | 2061 (24.8) | 2353 | 8.8 (8.4–9.1) | 0.92 (0.87–0.98) | 0.90 (0.85–0.96) |
| Highest quartile | 2279 (27.4) | 2633 | 8.7 (8.3–9.0) | 0.91 (0.86–0.97) | 0.87 (0.82–0.93) |
| Measures of urbanness | |||||
| Distance | p < 0.0001b | p < 0.0001b | |||
| Furthest from centre | 2261 (27.2) | 2185 | 10.3 (9.9–10.8) | 1 | 1 |
| 2 | 2323 (27.9) | 2284 | 10.2 (9.8–10.6) | 0.98 (0.93–1.04) | 0.95 (0.89–1.01) |
| 3 | 1983 (23.8) | 2372 | 8.4 (8.0-8.7) | 0.81 (0.76–0.86) | 0.74 (0.70–0.79) |
| Closest to centre | 1760 (21.1) | 2455 | 7.2 (6.8–7.5) | 0.69 (0.65–0.74) | 0.55 (0.52–0.60) |
| Population density | p < 0.0001b | p < 0.0001b | |||
| Lowest quartile | 2578 (31.0) | 2184 | 11.8 (11.4–12.3) | 1 | 1 |
| 2 | 2242 (26.9) | 2233 | 10.0 (9.6–10.5) | 0.85 (0.80–0.90) | 0.84 (0.80–0.89) |
| 3 | 1719 (20.6) | 2413 | 7.1 (6.8–7.5) | 0.60 (0.57–0.64) | 0.59 (0.56–0.63) |
| Highest quartile | 1788 (21.5) | 2466 | 7.2 (6.9–7.6) | 0.61 (0.58–0.65) | 0.58 (0.54–0.61) |
| % Greenspace | p < 0.0001b | p < 0.0001b | |||
| Most greenspace | 2090 (25.1) | 2189 | 9.5 (9.1–10.0) | 1 | 1 |
| 2 | 2128 (25.6) | 2322 | 9.2 (8.8–9.6) | 0.96 (0.90–1.02) | 0.95 (0.89–1.01) |
| 3 | 2171 (26.1) | 2381 | 9.1 (8.7–9.5) | 0.95 (0.90–1.01) | 0.94 (0.89-1.00) |
| Least greenspace | 1938 (23.3) | 2405 | 8.1 (7.7–8.4) | 0.84 (0.79–0.90) | 0.84 (0.79–0.90) |
| % Non-white ethnicity | p < 0.0001b | p < 0.0001b | |||
| Lowest quartile | 1646 (19.8) | 2341 | 7.0 (6.7–7.4) | 1 | 1 |
| 2 | 2152 (25.8) | 2407 | 8.9 (8.6–9.3) | 1.27 (1.19–1.36) | 1.23 (1.15–1.31) |
| 3 | 2388 (28.7) | 2353 | 10.2 (9.8–10.6) | 1.44 (1.36–1.54) | 1.35 (1.27–1.43) |
| Highest quartile | 2141 (25.7) | 2196 | 9.7 (9.3–10.2) | 1.39 (1.30–1.48) | 1.27 (1.19–1.35) |
KCH King’s College Hospital, STH St Thomas’ Hospital, UHL University Hospital Lewisham, CUH Croydon University Hospital
†Standardised for sex, 5-year age band and year of admission, ‡based on individuals’ first admission each year, alikelihood ratio test, blikelihood ratio test for trend