Table 1 Socio-demographic characteristics of newly diagnosed human immunodeficiency virus (HIV)-positive cases in Korea in 2016–2023 and included in the Recent HIV Infection Study.

From: Recent HIV infections and associated risk factors among newly diagnosed individuals in South Korea (2016–2023)

Study variables

Category

 

Recency assay results

Total

Longstanding infection

Recent HIV infection

N (%)

N (%)

N (%)

Distribution (%)*

Overall

 

7545

5577 (73.9)

1968 (26.1)

100

Sex

Male

6918 (91.7)

5057 (73.1)

1861 (26.9)

94.6

Female

627 (8.3)

520 (82.9)

107 (17.1)

5.4

Age (years)

 < 20 (16–19)

53 (0.7)

26 (49.1)

27 (50.9)

1.4

20 s (20–29)

2332 (30.9)

1433 (61.4)

899 (38.6)

45.7

30 s (30–39)

2422 (32.1)

1809 (74.7)

613 (25.3)

31.1

40 s (40–49)

1279 (17.0)

1056 (82.6)

223 (17.4)

11.3

50 s (50–59)

896 (11.9)

767 (85.6)

129 (14.4)

6.6

 ≥ 60

563 (7.5)

486 (86.3)

77 (13.7)

3.9

Nationality

Korean nationals

6227 (82.5)

4526 (72.7)

1701 (27.3)

86.4

Foreign nationals

1318 (17.5)

1051 (79.7)

267 (20.3)

13.6

Region (residency)

Metropolitan

4228 (56.0)

3085 (73.0)

1143 (27.0)

58.1

Small city/rural area

3317 (44.0)

2492 (75.1)

825 (24.9)

41.9

Transmission mode

MSM

2821 (37.4)

1968 (69.8)

853 (30.2)

43.3

Heterosexual contact

2529 (33.5)

1892 (74.8)

637 (25.2)

32.4

Others

266 (3.5)

205 (77.1)

61 (22.9)

3.1

Not known

1779 (23.6)

1406 (79.0)

373 (21.0)

19.0

No-response

150 (2.0)

106 (70.7)

44 (29.3)

2.2

Marital status

Married/Cohabiting

1270 (16.8)

1021 (80.4)

249 (19.6)

12.7

Single/Not married

5585 (74.0)

3996 (71.5)

1589 (28.5)

80.7

Etc./Not recorded

690 (9.2)

560 (81.2)

130 (18.8)

6.6

Occupation

Service worker

344 (4.5

245 (71.2)

99 (28.8)

5.0

Production worker

65 (0.9)

55 (84.6)

10 (15.4)

0.5

Student

72 (1.0)

35 (48.6)

37 (51.4)

1.9

Others

122 (1.6)

98 (80.3)

24 (19.7)

1.2

No response

6942 (92.0)

5144 (74.1)

1798 (25.9)

91.4

Testing institute

Hospital/clinic

5053 (67.0)

3857 (76.3)

1196 (23.7)

60.8

Blood donation center

395 (5.2)

218 (55.2)

177 (44.8)

9.0

Public health center

1952 (25.9)

1399 (71.7)

553 (28.3)

28.1

Military Manpower Administration

122 (1.6)

86 (70.5)

36 (29.5)

1.8

Correctional facility

23 (0.3)

17 (73.9)

6 (26.1)

0.3

Testing purpose (combined)

Outpatient clinic visits

3285 (43.5)

2416 (73.5)

869 (26.5)

44.2

Preoperative testing

1062 (14.1)

873 (82.2)

189 (17.8)

9.6

Health checkups

591 (7.8)

482 (81.6)

109 (18.4)

5.5

Voluntary testing

1644 (21.8)

1154 (70.2)

490 (29.8)

24.9

Blood donation screening

360 (4.8)

195 (54.2)

165 (45.8)

8.4

Military manpower administration screening

147 (2.0)

105 (71.4)

42 (28.6)

2.1

Others§

456 (6.0)

352 (77.2)

104 (22.8)

5.3

Testing purpose (single)

Outpatient clinic visits

3262 (43.2)

2396 (73.5)

866 (26.6)

44.0

Antenatal testing

23 (0.3)

20 (87.0)

3 (13.0)

0.2

Preoperative testing

1062 (14.1)

873 (82.2)

189 (17.8)

9.6

Health checkups

591 (7.8)

482 (81.6)

109 (18.4)

5.5

Voluntary named testing

993 (13.2)

688 (69.3)

305 (30.7)

15.5

Voluntary anonymous testing

651 (8.7)

466 (71.6)

185 (28.4)

9.4

Blood donation screening

360 (4.9)

195 (54.2)

165 (45.8)

8.4

Military Manpower Administration screening

147 (2.0)

105 (71.4)

42 (28.6)

2.1

Foreign resident screening

69 (0.9)

59 (85.5)

10 (14.5)

0.5

Correctional facility admission screening

60 (0.8)

52 (86.7)

8 (13.3)

0.4

Routine STI screening

108 (1.5)

74 (68.5)

34 (31.5)

1.7

Contact tracing of known HIV-positive individuals

49 (0.7)

39 (79.6)

10 (20.4)

0.5

Etc

93 (1.2)

69 (74.2)

24 (25.8)

1.2

No response

77 (1.0)

59 (76.6)

18 (23.4)

0.9

Year of HIV diagnosis

2016

935 (12.4)

669 (71.6)

266 (28.4)

13.5

(sample collection)

2017

1062 (14.1)

781 (73.5)

281 (26.5)

14.3

2018

1020 (13.5)

808 (79.2)

212 (20.8)

10.7

2019

1059 (14.0)

821 (77.5)

238 (22.5)

12.1

2020

787 (10.4)

563 (71.5)

224 (28.5)

11.4

2021

805 (10.7)

611 (75.9)

194 (24.1)

9.9

2022

927 (12.3)

651 (70.2)

276 (29.8)

14.0

2023

950 (12.6)

673 (70.8)

277 (29.2)

14.1

  1. *Distribution: The percentage occupied by a specific category within a single variable.
  2. Outpatient visits include both outpatient clinic visits and antenatal testing.
  3. Voluntary testing includes both named and anonymous voluntary testing.
  4. §Others include military manpower administration screening, foreign resident screening, correctional facility admission screening, routine STI screening, contact tracing of known HIV-positive individuals, and other unspecified categories (N/A).
  5. Median age of study participants: 34 (interquartile range: 28–46) years.
  6. HIV Human immunodeficiency virus, MSM Men who have sex with men, STI Sexually transmitted infection.