Table 1

 Number (%) of inconsistent condom users among clients according to sociodemographic, behavioural, and knowledge variables

VariableTotalCondom use
InconsistentConsistent†
†Used a condom at each and every visit to a sex worker.
*p<0.05, **p<0.001.
Sociodemographic variables
Age
    Mean (SD)34.735.9(10.00)33.7(10.17)
    Median323431
Nationality
    Singaporean15465(42.2)89(57.8)
    Others7538(50.7)37(49.3)
Marital status
    Never married13260(45.5)72(54.5)
    Married9743(44.3)54(55.7)
Education
    None or primary education5033(66.0)17(34.0)*
    Secondary or higher17970(39.1)109(60.9)
Occupation
    Unskilled operators5534(61.8)21(38.2)*
    Skilled operators7537(49.3)38(50.7)
    Others9932(32.3)67(67.7)
Salary (Singapore $)
    <200013571(52.6)64(47.4)*
    ⩾20009432(34.0)62(66.0)
Business trips
    Yes5317(32.1)36(67.9)*
    No17686(48.9)90(51.1)
Behavioural variables
No of visits in the past 6 months
    Median342*
    1–416159(36.6)102(63.4)**
    ⩾56744(65.7)23(34.3)
Have regular sex worker
    Yes3421(61.8)13(38.2)*
    No19582(42.1)113(57.9)
Practise oral sex
    Yes, use condom7224(33.3)48(66.7)
    Yes, didn’t use condom6331(49.2)32(50.8)
    No9448(51.1)46(48.9)
Have other sex partners
    Yes10838(35.2)70(64.8)*
    No12065(54.2)55(45.8)
Previous STD infection
    Yes8246(61.8)36(38.2)*
    No or don’t know14757(42.1)90(57.9)
Knowledge
STD knowledge
    Poor (<10)18695(51.1)91(48.9)**
    Good (10–11)438(18.6)35(81.4)
Condom knowledge
    Poor (<7)12163(52.1)58(47.9)*
    Good ( = 7)10840(37.0)68(63.0)