Frequency (%)

Unadjusted

Adjusted

OR [CI(95%)]

p value

AOR [CI(95%)]

p value

Gender

<0.001

Female

2576 (81.6)

1

Male

1657 (89.1)

1.85 [1.56 - 2.22]

Age (years)

<0.001

<0.001

<30

908 (74.8)

1

1

30 - 39

1652 (84.6)

1.85 [1.55 - 2.21]

1.89 [1.54 - 2.33]

40 - 49

1094 (90.4)

3.17 [2.52 - 4.00]

3.19 [2.46 - 4.16]

>50

579 (90.2)

3.19 [2.32 - 4.14]

3.55 [2.46 - 4.93]

Education level

<0.001

Secondary or higher

1221 (85.8)

1

Primary or none

1715 (88.5)

2.13 [1.77 - 2.56]

Unknown

1297 (78.3)

1.67 [1.38 - 2.03]

Occupation

0.008

Handworker

1971 (85.9)

1

Public employee

604 (85.3)

0.95 [0.75 - 1.21]

Commerce

1204 (82.8)

0.79 [0.66 - 0.94]

Unemployed

454 (81.1)

0.70 [0.55 - 0.90]

Marital status

<0.001

Married

2489 (84.2)

1

Single

572 (81.8)

0.85 [0.68 - 1.05]

Widowed

953 (89.6)

1.61 [1.29 - 2.01]

Unknown

219 (73.2)

0.51 [0.39 - 0.68]

Location

0.277

Cotonou or nearby

3617 (84.6)

1

Other

492 (83.4)

0.89 [0.72 - 1.09]

Reason for testing

<0.001

PMTCT

160 (62.0)

1

Clinical suspicion

3296 (88.8)

4.85 [3.70 - 6.37]

Blood born

402 (63.7)

1.08 [0.80 - 1.45]

Own initiative

375 (89.9)

4.95 [3.63 - 6.70]

BMI (kg/m2)

<0.001

<0.001

<18.5

2966 (91.6)

1.67 [1.10 - 2.55]

1.85 [1.16 - 2.95]

18.5 - 25

1328 (86.7)

1

1

25 - 30

292 (77.0)

0.51 [0.38 - 0.68]

0.49 [0.35 - 0.67]

>30

75 (52.8)

0.17 [0.12 - 0.25]

0.18 [0.11 - 0.27]