| Incidence rate | Incidence rate ratio(95%CI) | P |
---|---|---|---|
Overall | 0.225 | Â | Â |
Age | |||
 <60 | 0.058 | Ref | <0.001 |
 ≥ 60 | 1.073 | 17.66(13.047–23.905) |  |
Sex | |||
 Male | 0.241 | Ref |  |
 Female | 0.214 | 1.104(0.857–1.422) | 0.444 |
Race | |||
 White | 0.237 | Ref | 0.004 |
 Othersa | 0.182 | 0.613(0.439–0.855) |  |