Table 4.

Sociodemographic and clinical predictors of molecular clustering in TB cases, Switzerland, 2000 to 2008^a

Characteristic	Unadjusted result		Adjusted result
	OR (95% CI)	P	OR (95% CI)	P
Age (yr) at TB diagnosis		0.21		0.29
16–30	1		1
30–49	0.60 (0.30–1.19)		0.63 (0.32–1.27)
≥50	0.57 (0.28–1.15)		0.60 (0.29–1.22)
Sex		0.078		0.10
Male	1		1
Female	0.60		0.62 (0.35–1.10)
Origin of birth		0.067		0.086
Switzerland	1		1
Other Europe	0.87 (0.39–1.96)		0.74 (0.31–1.75)
Sub-Saharan Africa	1.73 (0.79–3.78)		1.03 (0.40–2.66)
Other regions/unknown	0.57 (0.25–1.32)		0.37 (0.14–0.98)
Legal status		0.13		0.13
Swiss nationals	1		1
Foreigners, residents	0.67 (0.30–1.52)		0.46 (0.18–1.17)
Foreigners, otherb	1.98 (0.81–4.82)		1.48 (0.56–3.92)
Asylum seekers/refugees	1.57 (0.69–3.56)		0.90 (0.32–2.51)
Unknown	1.62 (0.61–4.30)		1.32 (0.49–3.52)
HIV status		0.055		0.030
Negative	1		1
Infected	0.55 (0.30–1.01)		0.49 (0.26–0.93)
Immunosuppression other than due to HIV infectionc		0.26		0.078
No	1		1
Yes	1.73 (0.67–4.50)		2.54 (0.90–7.17)
Smear result		0.007		0.012
Negative	1		1
Positive	2.26 (1.25–4.09)		2.16 (1.18–3.96)
Cavitary TB		0.005		0.012
No	1		1
Yes	2.48 (1.32–4.64)		2.27 (1.20–4.28)
Pulmonary TB		0.011		0.015
No	1		1
Yes	2.73 (1.26–5.89)		2.63 (1.21–5.74)
TB in family or social surroundings in last 2 yr		0.031		0.049
No	1		1
Yes	2.90 (1.10–7.63)		2.75 (1.01–7.51)

^aResults are from weighted logistic regression models, unadjusted and adjusted for age and sex. CI, confidence interval; OR, odds ratio.

^bVisitors, students, etc.

^cUse of anti-TNF blockers, malignancy, organ transplantation, use of steroids or methotrexate.