Table 3 The baseline information among TBI patients with different Charlson’s Comorbidity Index groups.

From: The risk of pulmonary tuberculosis after traumatic brain injury

Variables

Mild-CCI

(N = 74,842)

Moderate-CCI

(N = 7142)

Severe-CCI (N = 2032)

p value

Age at entry, mean ± SD

43.21 ± 22.26

60.70 ± 22.17

58.00 ± 21.82

< 0.0001

Age at entry, n (%)

< 20

13,350 (17.84)

449 (6.29)

143 (7.04)

< 0.0001

20–34

17,208 (22.99)

687 (9.62)

213 (10.48)

35–49

15,057 (20.12)

920 (12.88)

304 (14.96)

50–64

14,196 (18.97)

1356 (18.99)

454 (22.34)

65–79

10,807 (14.44)

2259 (31.63)

592 (29.13)

80

4224 (5.64)

1471 (20.60)

326 (16.04)

Sex, n (%)

Male

50,308 (67.22)

4743 (66.41)

1365 (67.18)

0.3800

Female

24,534 (32.78)

2399 (33.59)

667 (32.82)

< 0.0001

LOS, median (IQR)

11 (7–18)

19 (9–38)

29 (15–48)

< 0.0001

Length of ICU, median (IQR)

3 (2–6)

5 (2–16)

7 (3–15)

< 0.0001

Outcome

TB, n (%)

551 (0.74)

121 (1.69)

30 (1.48)

< 0.0001

Time to TB, median (IQR)

2.43 (0.97–4.89)

1.88 (0.93–3.93)

1.81 (0.93–3.30)

0.0669

Death, n (%)

7291 (9.74)

2320 (32.48)

631 (31.05)

< 0.0001

Time to death, median (IQR)

1.97 (0.53–4.31)

1.62 (0.56–3.48)

1.93 (0.76–3.95)

< 0.0001

  1. CCI Charlson’s comorbidity index, ICU intensive care unit, LOS length of stay, TB tuberculosis, TBI traumatic brain injury, IQR interquartile range, SD standard deviation.