All causes of mortality in 45292 Californians with CP, 1986 to 1995
| Mild to moderate CP | Severe CP | |||||
|---|---|---|---|---|---|---|
| Age group (years) | Observed | Expected | SMR | Observed | Expected | SMR |
| Observed = observed number of deaths. | ||||||
| Expected = expected number of deaths in general Californian population for the same distribution by age and sex. | ||||||
| SMR (standardised mortality ratio) = the ratio of observed to expected deaths, all of which were greater than 1 with at all ages, p<0.0001. | ||||||
| There is a steep fall in SMR after 14 years when deaths in the general teenage population begin to rise; nevertheless, the SMR for 15–34 year olds with CP is 5–16 times more than expected. | ||||||
| After Strauss et al, 1999.8 | ||||||
| 0–4 | 299 | 7.5 | 39.8 | 340 | 3.5 | 97.1 |
| 5–14 | 333 | 10.1 | 33.0 | 640 | 5.9 | 108.5 |
| 15–34 | 451 | 94.1 | 4.8 | 877 | 53.3 | 16.4 |
| 35–54 | 337 | 91.8 | 3.7 | 333 | 44.7 | 7.4 |
| >55 | 234 | 105.2 | 2.2 | 183 | 64.2 | 2.9 |
| All ages | 1655 | 308.8 | 5.4 | 2373 | 171.7 | 13.8 |