Table 4.

Differences between prior and non-prior testors

Variable	n (%) responders		p
	Testors* (n = 276)	Non-testors (n = 65)
Mean age, years	34	28	<0.001
Sexual orientation: Self-defined as 'gay'	68%	35%	<0.001
Living in a stable relationship	30%	46%	0.021
Swiss nationality	79%	77%	0.729
Having had more than 10 sexual partners in the preceding 12 months	27%	19%	0.239
Prior risk situation as motivation to seek testing	45%	49%	0.566
New relationship as motivation to seek testing	29%	40%	0.084
Routine check-up as motivation to seek testing	26%	17%	0.121
Risk situation with anonymous partner	42%	48%	0.687
Use of drugs in conjunction with sexual activity	54%	48%	0.448
Risk situation longer than 3 months ago	45%	48%	0.688
Estimated risk for HIV or STI infection (10-point Likert scale (0 = Very low; 10 = Very high))	3.1	2.5	0.043

* Testors were defined as men with a history of HIV and any other STI. Non-testors had no history of either test.