Table 1. Characteristics of HIV-infected patients, by year of HIV diagnosis, Estonia, 2014–2015 (n = 538).

Patient characteristics	Overall (n = 538)		Year of HIV-infection diagnosis				p value
			2014 (n = 275)		2015 (n = 263)
	n	%	n	%	n	%
Age at HIV infection diagnosis (years)
Mean (median, SD, range)	36.3 (34; 10.7; 16–70)		36.6 (34; 10.6; 19–70)		35.9 (34; 10.8; 16–66)		0.5
Age group (years)
< 30	167	31.0	81	29.5	86	32.7	0.5
30–39	197	36.6	99	36.0	98	37.3
> 39	174	32.4	95	34.5	79	30.0
Sex
Male	336	62.5	174	63.3	162	61.6	0.7
Female	202	37.5	101	36.7	101	38.4
Estonian region where HIV was diagnosed
Ida-Viru county	228	42.4	119	43.3	109	41.4	0.8
Harju county	267	49.6	133	48.4	134	51.0
Rest of Estonia	43	8.0	23	8.3	20	7.6
Setting of HIV diagnosis
Family practitioner	41	7.6	20	7.3	21	8.0	< 0.001
Emergency medicine	21	3.9	9	3.3	12	4.5
Infectious diseases clinics, including anonymous testing	177	32.9	85	48.0	92	52.0
Gynaecology and obstetrics	50	9.3	22	8.0	28	10.6
Specialist doctors	132	24.5	69	25.1	63	24.0
Other	10	1.9	3	1.1	7	2.7
Prison	59	11.0	31	11.3	28	10.7
Unknown	48	8.9	36	13.1	12	4.5
HIV transmission mode
Heterosexual	302	56.1	160	58.2	142	54.0	0.005
MSM	21	3.9	3	1.1	18	6.8
Injecting drug use	122	22.7	67	24.4	55	20.9
Unknown	93	17.3	45	16.3	48	18.3

MSM: men who have sex with men; SD: standard deviation.