Table 1.

Sociodemographic data of the “VIR + smoke study” participants (N = 447), 2012

	Total	Smokers	Non-smokers	p*
N	447	221	222
Age (years, mean value) Range: 21–82 years	45.5	43.2	47.8	<0.001
Sex (%)				0.04
Male	86.4	88.2	84.2	2
Female	11.2	8.1	14.4
Missing	2.5	3.6	1.4
Sexual orientation (%)				0.445
Homosexual	66.2	69.7	62.6
Bisexual	6.7	5.4	26.1
Heterosexual	23.9	22.2	7.7
Missing	3.1	2.7	3.6
Educational level (%)				0.096
Primary	13.2	15.4	11.3
Secondary	56.4	59.3	54.5
Tertiary	25.5	19.9	29.7
Missing	4.9	5.4	4.5
Relationship status (%)				0.062
In a relationship	56.0	55.7	56.3
Not in a relationship	36.8	39.8	33.8
Missing	7.2	4.5	9.9
CDC stage (%)				0.627
A	85.3	56.6	56.8
B	22.6	24.9	20.3
C	19.0	17.2	21.2
Missing	1.6	1.4	1.8
Antiretroviral therapy (Yes, %)	85.3	82.2	88.0	0.104
Antidepressant therapy (Yes, %)	16.0	14.0	18.0	0.321
IV-drug use (Yes, %)	4.1	6.9	1.4	0.004
Cardiovascular disease (Yes,  %)	12.4	10.2	14.7	0.161
Tumours (Yes, %)	3.8	3.2	4.6	0.470
Smoking status of the chosen physician (Yes, %)				0.478
Physician smokes	6.5	7.7	5.4
Physician does not smoke	36.0	37.6	34.2
Do not know	55.0	52.0	58.6
Missing	2.5	2.7	1.8
Smoking status of the partnera (Yes, %)				<0.001
Smokes daily	39.4	58.5	20.8
Smokes sometimes	14.3	16.3	12.0
Does not smoke	45.4	24.4	67.2
Missing	0.8	0.8	0.0
Number of cigarettes smoked daily (%)				n.a.
Up to 10		24.0
11–20		37.1
21–30		22.2
31 and more		13.1
Missing		3.6

^aOnly those participants who indicated that they have a partner

^*Calculated using the t-test for data reported as mean and the χ ² test for frequencies