Table 1.

Factors Associated With Clustering From Human Immunodeficiency Virus Type 1 pol Sequences Collected in Kiev, April 2013–March 2015

Factor	All	%	Cluster	%	Univariate	P Value	Multivariate	P Value
					OR (95% CI)		aOR (95% CI)
All	858		283	33%
Subtype	858
A1	794	93%	241	30%	1		1
B	64	7%	42	66%	4.38 (2.56–7.50)	<.001	2.41 (1.28–4.54)	.007
Sex	804
Female	234	29%	50	21%	1
Male	570	71%	215	38%	2.23 (1.56–3.18)	<.001
Age, y	804
≤25	83	10%	34	41%	1.83 (1.10–3.05)	< .001	1.39 (.78–2.49)
26–30	199	25%	88	44%	2.09 (1.42–3.07)		1.75 (1.15–2.65)	.033
31–35	249	31%	68	27%	1.00 (.67–1.46)		1.02 (.68–1.53)
≥36	273	34%	75	27%	1		1
Risk group	794
Heterosexual male	230	29%	79	34%	1		1
Heterosexual female	181	23%	37	20%	0.49 (.31–.77)		0.51 (.32–.81)	<.001
PWID: male	241	30%	67	28%	0.74 (.50–1.09)		0.82 (.55–1.23)
PWID: female	51	6%	13	25%	0.65 (.33–1.30)		0.68 (.34–1.38)
MSM	91	11%	68	75%	5.65 (3.27–9.75)	<.001	4.36 (2.48–7.67)	<.001
Recent infection	795
No	728	92%	227	31%	1
Yes	67	8%	37	55%	2.72 (1.64–4.52)	<.001
Repeat tester	796
No	678	85%	226	33%	1
Yes	118	15%	39	33%	0.99 (.65–1.50)	.990
Sex worker/contact with sex worker	794
No	746	94%	274	37%	1
Yes	48	6%	24	50%	1.93 (1.07–3.47)	.028
Reason for test	763
High-risk behaviors	361	47%	112	31%	1
Screening	46	6%	11	24%	0.70 (.34–1.43)
Clinical indicators	356	47%	130	37%	1.27 (.94–1.74)	.120

Abbreviations: aOR, adjusted odds ratio; CI, confidence interval; MSM, men who have sex with men; OR, odds ratio; PWID, people who inject drugs.