Table 2 Results of Poisson regression analysis—rate ratios by age, gender
From: Knee arthrodesis: procedures and perspectives in the US from 1993 to 2011
Knee arthrodesis rate ratios | ||
|---|---|---|
Rate ratio | 95 % CI | |
Gender | ||
Male | 1.00 | – |
Female | 0.83 | (0.80, 0.85) |
Age group | ||
0–44 | 1.00 | – |
45–54 | 3.97 | (3.78, 4.17) |
55–64 | 7.32 | (6.99, 7.66) |
65–74 | 11.64 | (11.13, 12.16) |
75–84 | 15.00 | (14.32, 15.71) |
85+ | * | * |