Table 2

Predictors of HIV/STI testing intention based on univariable and multivariable logistic regression analyses

Predictor	Crude OR	P value	AOR	P value
Format
Text display	Ref		Ref
Risk metre	13.71 (9.35 to 20.11)	<0.001	2.44 (1.49 to 4.01)	<0.001
Risk bar	10.4 (7.35 to 14.71)	<0.001	2.08 (1.33 to 3.27)	0.001
Guideline recommendation	2.36 (1.90 to 2.94)	<0.001	1.16 (0.85 to 1.59)	0.36
Icon array	0.95 (0.81 to 1.12)	0.54	0.73 (0.57 to 0.94)	0.02
Participant groups
Heterosexual men	Ref		Ref
GBMSM	0.91 (0.70 to 1.18)	0.47	0.87 (0.56 to 1.35)	0.54
Women	0.88 (0.68 to 1.15)	0.34	1.71 (0.56 to 5.21)	0.35
Trans and gender diverse	0.74 (0.52 to 1.07)	0.11	0.93 (0.39 to 2.25)	0.88
Age	1.01 (0.99 to 1.02)	0.32	1.00 (0.98 to 1.02)	0.97
Sex assigned at birth
Male	Ref		Ref
Female	0.92 (0.74 to 1.14)	0.43	0.50 (0.18 to 1.39)	0.19
Country of origin
Australia	Ref		Ref
Other countries	1.08 (0.88 to 1.32)	0.70	1.06 (0.76 to 1.50)	0.72
Education
Primary school	Ref		Ref
Secondary school	0.62 (0.17 to 2.26)	0.47	4.75 (0.42 to 53.24)	0.21
Undergraduate degree	0.61 (0.17 to 2.22)	0.46	4.38 (0.39 to 48.66)	0.23
Postgraduate degree	0.59 (0.16 to 2.13)	0.42	3.73 (0.34 to 41.04)	0.28
Previously tested for STI
Yes	Ref		Ref
No	1.05 (0.75 to 1.46)	0.77	0.88 (0.51 to 1.52)	0.64
Risk perception
I think that I am not at risk of an STI	Ref		Ref
I think that I am at risk of an STI	42.76 (28.88 to 63.31)	<0.001	13.14 (7.77 to 22.22)	<0.001
I am not sure if I am at risk of an STI	2.09 (1.45 to 3.00)	<0.001	1.95 (1.26 to 3.04)	0.003
Level of concern
Moderate
Low	0.06 (0.05 to 0.08)	<0.001	0.11 (0.08 to 0.16)	<0.001
High	13.7 (5.78 to 32.45)	<0.001	4.79 (1.93 to 11.87)	0.001

AOR, adjusted OR; GBMSM, gay, bisexual and other men who have sex with men; STI, sexually transmitted infection.