Table 2 Updated CCI categories among the PKU cohort and the matched cohort
|  | PKU patients (n = 377) | Control group (n = 3,770) | Chi2 test p value | PR (95% CI) | ||
|---|---|---|---|---|---|---|
n | % | n | % | |||
CCI = 0 | 194 | 51.5 | 2,206 | 58.5 | 0.001 | 0.9 (0.79–0.97) |
CCI = 1 | 72 | 19.1 | 716 | 19.0 | 1.000 | 1.0 (0.81–1.25) |
CCI = 2 | 35 | 9.3 | 353 | 9.4 | 1.000 | 1.0 (0.71–1.38) |
CCI = 3 | 30 | 8.0 | 189 | 5.0 | 0.021 | 1.6 (1.10–2.30) |
CCI ≥ 4 | 46 | 12.2 | 306 | 8.1 | 0.009 | 1.5 (1.12–2.01) |