Table 4.

Risk factors for a positive QGIT in dialysis patients (n = 83)

Risk Factor	Crude OR	95% CI	P	Adjusted ORa	95% CI	P
Age, yearsb
<50	1.00			1.00
50 to 59	2.19	0.56 to 8.55	0.26	2.61	0.58 to 11.68	0.21
60 to 69	4.14	1.05 to 16.29	0.04	5.10	1.07 to 24.28	0.04
≥70	1.75	0.37 to 8.20	0.48	1.91	0.34 to 10.81	0.47
Gender, male	1.31	0.53 to 3.22	0.56	1.32	0.47 to 3.66	0.60
BCG vaccination	0.52	0.20 to 1.32	0.17	0.50	0.16 to 1.62	0.25
Diabetes mellitus	1.83	0.64 to 5.24	0.26	0.58	0.15 to 2.21	0.43
Malnutrition with BMI < 20	0.54	0.18 to 1.58	0.26	0.46	0.14 to 1.54	0.21
Dialysis vintage, yearsc
<4	1.00			1.00
4 to 9	0.32	0.09 to 1.09	0.07	0.21	0.05 to 0.82	0.03
≥10	0.25	0.07 to 0.86	0.03	0.22	0.06 to 0.81	0.02
Past TB disease	3.69	0.85 to 15.99	0.08	5.32	1.01 to 28.03	0.05
Evidence of past TB on chest x-ray	2.53	0.40 to 16.07	0.32	5.18	0.68 to 39.65	0.11
TST ≥10 mm	1.94	0.75 to 5.02	0.18	2.39	0.75 to 7.62	0.14

^aAdjusted for age, gender, and dialysis vintage.

^bTest for trend excluding those aged <70 years: OR 1.93, 95% CI 1.04 to 3.58, test for trend P = 0.04.

^cTest for trend: OR 0.53, 95% CI 0.30 to 0.96, test for trend P = 0.04.