Table 2.
Correlation between PCT quartiles and mortality adjusted for age and sex
| Subjects | Outcome | Number of eventsa |
Q2 versus Q1 |
Q3 versus Q1 |
Q4 versus Q1 |
P for linear trend |
|---|---|---|---|---|---|---|
| HR (95% CI) | HR (95% CI) | HR (95% CI) | ||||
| All subjects |
All-cause mortality |
8.39 |
1.05 (0.77 to 1.43) |
1.29 (0.96 to 1.73) |
1.63 (1.22 –to 2.17) |
<0.001*** |
| Cancer mortality |
3.88 |
1.07 (0.69 to 1.68) |
1.47 (0.96 to 1.25) |
1.60 (1.04 to 2.43) |
0.014* |
|
| CVD mortality |
2.34 |
1.24 (0.67 to 2.29) |
1.30 (0.71 to 2.36) |
1.94 (1.09 to 3.42) |
0.016* |
|
| Mortality from causes other than cancer and CVD |
2.16 |
0.92 (0.50 to 1.68) |
1.08 (0.60 to 1.93) |
1.49 (0.86 to 2.60) |
0.096 |
|
| Men |
All-cause mortality |
11.14 |
0.98 (0.67 to 1.45) |
0.98 (0.68 to 1.42) |
1.50 (1.08 to 2.09) |
0.020* |
| Cancer mortality |
4.92 |
1.54 (0.86 to 2.75) |
1.23 (0.68 to 2.21) |
1.96 (1.15 to 3.35) |
0.027* |
|
| CVD mortality |
3.13 |
0.74 (0.34 to 1.61) |
0.86 (0.43 to 1.72) |
1.41 (0.76 to 2.60) |
0.208 |
|
| Mortality from causes other than cancer and CVD |
3.09 |
0.65 (0.03 to 1.40) |
0.86 (0.44 to 1.67) |
1.15 (0.62 to 2.12) |
0.557 |
|
| Women | All-cause mortality |
6.30 |
1.45 (0.86 to 2.46) |
1.57 (0.91 to 2.71) |
2.04 (1.22 to 2.34) |
0.004* |
| Cancer mortality |
3.13 |
1.51 (0.77 to 2.99) |
1.25 (0.59 to 2.62) |
1.62 (0.81 to 3.23) |
0.295 |
|
| CVD mortality |
1.74 |
1.18 (0.36 to 3.86) |
1.91 (0.61 to 6.00) |
2.73 (0.93 to 8.06) |
0.012* |
|
| Mortality from causes other than cancer and CVD | 1.46 | 1.66 (0.52 to 5.25) | 2.17 (0.68 to 6.96) | 2.40 (0.78 to 7.38) | 0.106 |
Cox regression analysis adjusted for age and sex. aExpressed per 1,000 person years. CI, confidence interval; CVD, cardiovascular disease; HR, hazard ratio; PCT, procalcitonin; Q, quartile. *P <0.05, ***P <0.001.