Table 4.

Meta-regression of HIV test uptake

Variable	Univariable			Multivariable1
	β (95% CI)	P-value	Adjusted R2	β (95% CI)	P-value
Type of HIV testing service approach			-0.15%
Opt-in	Reference			Reference
Opt-out	0.04 (-0.05 to 0.12)	0.413		0.12 (0.03 to 0.21)	0.007
Risk-based	-0.05 (-0.19 to 0.09)	0.506		-0.03 (-0.17 to 0.11)	0.685
Rapid testing			-0.51%
Available	Reference			Reference
Not available	-0.02 (-0.10 to 0.07)	0.674		-0.03 (-0.11 to 0.06)	0.542
Country income level			12.1%
High	Reference			Reference
Middle	0.24 (0.15 to 0.33)	< 0.001		0.21 (0.09 to 0.32)	0.001
Low	0.14 (-0.01 to 0.30)	0.067		0.19 (0.00 to 0.38)	0.051
Mixed	0.28 (-0.23 to 0.79)	0.273		0.17 (-0.41 to 0.75)	0.560
Setting			17.9%
Hospital	Reference			Reference
GP/primary care	0.10 (-0.07 to 0.28)	0.251		0.04 (-0.22 to 0.29)	0.779
Pharmacy	-0.30 (-0.82 to 0.22)	0.256		-0.20 (-0.76 to 0.36)	0.487
Community-based	0.06 (-0.08 to 0.21)	0.371		0.03 (-0.22 to 0.29)	0.795
Emergency Department	-0.23 (-0.35 to -0.10)	< 0.001		-0.35 (-0.68 to -0.03)	0.032
Prison	-0.03 (-0.20 to 14.4)	0.761		0.09 (-0.11 to 0.28)	0.373
Outpatients	-0.15 (-0.29 to 0.0)	0.044		-0.29 (-0.54 to -0.04)	0.021
Mixed	-0.23 (-0.54 to 0.08)	0.141		-0.32 (-0.67 to 0.03)	0.072
Populations			11.5%
Inpatients	Reference			Reference
Emergency patients	-0.18 (-0.33 to -0.03)	0.017		0.26 (-0.07 to 0.59)	0.124
Paediatrics	0.09 (-0.16 to 0.34)	0.495		-0.01 (-0.18 to 0.38)	0.958
General public	0.07 (-0.09 to 0.23)	0.383		0.10 (-0.18 to 0.38)	0.487
Outpatients	-0.03 (-0.19 to 0.13)	0.710		0.22 (-0.05 to 0.48)	0.108
Incarcerated persons	0.01 (-0.18 to 0.21)	0.900		*
Mixed	-0.19 (-0.52 to 0.14)	0.251		*
Latest study year			-0.16%
2016–2020	Reference			Reference
2011–2015	-0.07 (-0.19 to 0.04)	0.194		0.01 (-0.10 to 0.12)	0.818
2006–2010	-0.09 (-0.20 to 0.02)	0.114		0.04 (-0.08 to 0.15)	0.552
2001–2005	-0.03 (-0.29 to 0.23)	0.812		0.19 (-0.06 to 0.44)	0.135

*omitted because of collinearity

¹Adjusted R² 23.3%