Table 2 Testing willingness of MSM with different knowledge, attitude, behavior. (n = 1687)

Knowledge, n (%) answered correctly

K1: If I eat with HIV-infected people, I will be infected with HIV.

1522

901

59.2

< 0.0001

K2: If I share needles with drug addicts, I will be infected with HIV.

1615

934

57.83

0.0067

K3: If I practice oral sex without condoms, I will be infected with HIV.

1224

698

57.03

0.8748

K4: Mosquito bites can cause HIV infection.

1263

776

61.44

< 0.0001

K5: If I use condoms correctly at each insertion, I can avoid HIV infection

1519

883

58.13

0.0137

K6: Removal of the penis from the vagina or anus before ejaculation can prevent HIV infection.

1304

770

59.05

0.0035

K7: Being with only one uninfected loyal partner can prevent HIV infection.

1196

705

58.95

K8: All HIV-infected pregnant women give birth to HIV-infected children.

968

601

62.09

< 0.0001

K9: People who use antibiotics are not infected.

1430

847

59.23

< 0.0001

K10: Examination results at 1 week after sexual intercourse can determine whether the person is infected with HIV.

656

451

68.75

< 0.0001

K11: AIDS can not be cured.

1424

841

59.06

0.0002

K12: Oral sex is much less likely to transmit HIV than anal intercourse.

736

414

56.25

0.5145

K13: The risk of HIV infection can be reduced by the treatment of sexually transmitted diseases.

1284

735

57.24

0.8821

Attitude, n (%) answered agree

A1: Getting tested for HIV helps people feel better

1460

896

61.37

< 0.0001

A2: Getting tested for HIV helps people avoid HIV infection

1438

894

62.17

< 0.0001

A3: Regular HIV antibody testing is necessary

1417

908

64.08

< 0.0001

A4: The institutions nearby offer reliable HIV antibody testing services

Behavior (last 6 months)

1329

834

62.75

< 0.0001

B1: Number of male sexual partners

< 0.0001

None

527

226

42.88

1

868

547

63.02

2 or more

292

191

65.41

B2: Commercial sex activity

< 0.0001

Never

1466

873

59.55

Done

221

91

41.18

B3: Frequency of searching for sexual partners through the internet

0.0002

Never

1066

604

59.66

Sometimes or occasionally

481

300

62.37

Frequently

140

60

42.86

B4: Drug use

< 0.0001

Never

1550

920

59.35

Done

137

44

32.12

B5: History of STD

< 0.0001

No

1404

843

60.04

Yes

283

121

42.76