Risk factors for tuberculosis in dialysis patients: a prospective multi-center clinical trial

BMC Nephrology

Table 2 The risk for TB in dialysis patients, by sex, age, Body Mass Index (BMI) and Diabetes Mellitus.

Characteristic	Population at risk	TB cases	TB rate (%)	RR	Adj RR	95% CI
Sex
Male	193	15	7.7	70	28.2	26.4-30.1
Female	79	9	11.3	102.7	34.5	31.4-37.5
M:F ratio	2.4		0.6		0.8
P value			0.003		0.01
Age
≤ 49	38	2	5.2	47.8	16.2	11.7-20.6
50-69	165	12	7.2	66.1	22.8	20.6-24.9
≥ 70	69	10	14.4	130.9	25.3	20.4-28.4
r			0.95		0.95
P value			0.006		0.02
BMI
< 18	58	9	15.5	140.9	72.3	65.2-79.8
18-25	79	7	8.8	80.0	36.8	28.3-44.5
25-30	92	6	6.5	59.0	28.4	22.1-34.3
>30	43	2	4.6	42.2	23.1	18.4-28.2
r			-0.98		-0.99
P value			< 0.001		< 0.001
Diabetes Mellitus
Yes	75	8	10.6	96.3	25.3	20.4-28.4
No	197	16	8.1	73.6	19.2	17.2-21.1
DM:no DM ratio	0.3		1.3		1.3
P value			0.01		0.03

RR: relative risk taking as reference group subjects from the general population, Adj RR: adjusted relative risk after allowing for the effect of the other characteristics, CI: Wald 95% Confidence Interval, r: correlation coefficient, P value: for the differences between groups.

ISSN: 1471-2369