Estimated incident rate ratios (IRRs) for premature (U75) CHD mortality count (n=215)*
| Without smoking prevalence variable | With smoking prevalence variable | |||||
|---|---|---|---|---|---|---|
| Explanatory variable | IRR | 95% CI | p Value | IRR | 95% CI | p Value |
| Percentage white patients | 1.007 | (1.003 to 1.012) | 0.002 | 1.001 | (0.995 to 1.007) | 0.657 |
| Deprivation score (IMD 2007) | 1.017 | (1.011 to 1.024) | <0.0001 | 1.005 | (0.995 to 1.015) | 0.348 |
| Prevalence of diabetes (QOF 2006/2007) | 1.108 | (1.020 to 1.203) | 0.015 | 1.095 | (1.008 to 1.187) | 0.031 |
| Percentage over 65 | 1.060 | (1.038 to 1.083) | <0.0001 | 1.067 | (1.044 to 1.091) | <0.0001 |
| Percentage male patients | 1.073 | (1.035 to 1.111) | <0.0001 | 1.058 | (1.021 to 1.097) | 0.002 |
| Number of GPs per 1000 patients | 1.209 | (0.894 to 1.637) | 0.218 | 1.113 | (0.821 to 1.508) | 0.491 |
| Hypertension detection 2006/2007 (QOF 2006/2007) | 0.984 | (0.955 to 1.014) | 0.300 | 0.988 | (0.959 to 1.018) | 0.416 |
| Percentage of patients offered smoking cessation advice (SM02—QOF 2006/2007) | 1.006 | (0.996 to 1.016) | 0.271 | 1.010 | (1.000 to 1.021) | 0.057 |
| Percentage of serum cholesterol (CHD08—QOF 2006/2007) | 0.989 | (0.980 to 0.999) | 0.028 | 0.992 | (0.983 to 1.002) | 0.109 |
| Percentage of aspirin (CHD09—QOF 2006/2007) | 1.007 | (0.986 to 1.029) | 0.514 | 1.003 | (0.982 to 1.025) | 0.777 |
| Percentage of patients with recalled perception of being able to see preferred GP (QOF 2006/2007) | 0.995 | (0.990 to 1.000) | 0.069 | 0.995 | (0.990 to 1.000) | 0.061 |
| Percentage of smoking prevalence—estimated (QOF 2006/2007) | 1.031 | (1.012 to 1.052) | 0.002 | |||
*IRR, 95% CIs and associated p values as a result of negative binomial model of count of premature mortality caused by CHD.
CHD, coronary heart disease; GP, general practitioner; QOF, Quality and Outcomes Framework.