Table 4 Crude incidence rates (per 10 000 person-years) and age standardised incidence ratios (SIR) for the period 1988 to 2001 by geographical area of the United Kingdom (listed in order of SIR)
Autism | Other PDDs | ALL | |||||||
|---|---|---|---|---|---|---|---|---|---|
Region | Number of cases | Incidence rate | SIR | Number of cases | Incidence rate | SIR | Number of cases | Incidence rate | SIR (95%CI) |
WALES | 40 | 0.64 | 83 | 1 | 0.02 | 7 | 41 | 0.65 | 66 (49,90) |
NORTH WEST | 121 | 0.60 | 78 | 32 | 0.16 | 72 | 153 | 0.76 | 77 (66,90) |
NORTHERN & YORKSHIRE | 86 | 0.74 | 98 | 11 | 0.10 | 43 | 97 | 0.84 | 85 (70,104) |
N. IRELAND | 29 | 0.71 | 97 | 7 | 0.17 | 79 | 36 | 0.88 | 93 (67,129) |
EASTERN | 132 | 0.76 | 97 | 35 | 0.20 | 90 | 167 | 0.96 | 95 (82,111) |
SCOTLAND | 32 | 0.62 | 84 | 15 | 0.29 | 135 | 47 | 0.91 | 96 (72,128) |
LONDON | 112 | 0.79 | 103 | 24 | 0.17 | 78 | 136 | 0.96 | 97 (82,115) |
TRENT | 94 | 0.79 | 100 | 24 | 0.20 | 90 | 118 | 0.99 | 98 (82,117) |
SOUTH WEST | 99 | 0.72 | 92 | 44 | 0.32 | 144 | 143 | 1.03 | 103 (87,121) |
WEST MIDLANDS | 146 | 0.85 | 113 | 36 | 0.21 | 97 | 182 | 1.06 | 109 (94,126) |
SOUTH EAST | 206 | 1.00 | 128 | 84 | 0.41 | 184 | 290 | 1.40 | 141 (126,158) |