Table 2. Prevalence (95% CI) of basic knowledge about HIV, by demographic characteristics.

Characteristic Never heard of HIV (n=7022) Heard of HIV but donít
know it is a virus
(n=5633)
Heard of HIV but donít
know it is diagnosed by
blood test (n=5633)

Overall 16.9 (14.5-19.2) 73.3 (69.7-76.9) 89.1 (85.9-92.2)
Region(by socioeconomic status)
High 3.9 (3.0-4.8) 58.1 (52.0-64.3) 78.6 (71.1-86.1)
Medium 18.5 (14.5-22.5) 79.0 (69.6-88.5) 91.4 (83.1-99.6)
Low 20.4 (16.4-24.3) 75.7 (71.7-79.8) 92.0 (90.0-94.0)
Age group (years)
15-20 21.2 (17.2-25.1) 63.8 (53.3-74.3) 87.0 (81.2-92.8)
21-29 13.9 (11.0-16.8) 70.7 (67.1-74.4) 86.6 (81.6-91.6)
30-39 17.0 (14.9-19.1) 73.5 (68.3-78.7) 89.4 (85.9-92.8)
40-49 18.3 (14.5-22.1) 77.3 (72.8-81.7) 91.3 (87.3-95.2)
Sex
Male 13.7 (11.4-16.0) 68.5 (63.7-73.3) 86.9 (83.0-90.7)
Female 20.2 (17.0-23.4) 78.8 (75.9-81.7) 91.6 (89.2-94.1)
Education (years)
<7 30.7 (25.4-36.0) 83.3 (78.1-88.4) 93.5 (89.9-97.1)
7-9 13.2 (10.9-15.5) 75.8 (71.6-80.0) 91.1 (88.1-94.2)
10+ 3.3 (2.2-4.3) 57.1 (52.0-62.2) 80.0 (74.3-85.8)
Occupation
Farmer 22.6 (19.8-25.4) 80.0 (76.1-83.9) 93.5 (91.1-95.9)
Farm worker/
rural business
14.0 (9.8-18.3) 74.7 (64.0-85.5) 89.4 (82.3-96.6)
Other (1) 4.8 (3.2-6.3) 58.5 (54.0-63.0) 79.8 (74.3-85.4)
Marital status
Single 16.9 (14.0-19.8) 61.4 (54.6-68.3) 83.1 (77.8-88.4)
Married 16.8 (14.4-19.3) 75.1 (70.7-79.4) 90.0 (87.0-93.1)
Other (2) 19.1 (13.2-25.1) 69.0 (59.1-78.9) 81.0 (68.5-93.5)
Annual income (Chinese yuan)
<1500 20.3 (16.3-24.3) 76.1 (72.6-79.5) 93.5 (92.2-94.8)
1500-3499 20.8 (17.2-24.4) 76.1 (69.5-82.6) 88.6 (83.9-93.4)
3500+ 6.3 (4.8-7.8) 66.5 (60.1-72.9) 83.2 (76.7-89.7)

1Includes laborer, cadre, employee of domestic enterprise, employee of foreign enterprise, student, and unemployed.
2Includes separated, divorced, remarried, and widow/widower.