(a)

Variable

Odds ratio

95% Confidence level

(lower - higher)

P-value

Age (years)

<26

26 - 35

36 - 45

46 - 55

56 - 65

1

10.647

3.680

2.737

3.384

1.910 - 59.345

1.263 - 10.723

1.114 - 6.727

1.610 - 7.115

0.007*

0.017*

0.039*

0.001*

Level of education

Tertiary

No formal

Primary

Secondary

1

2.764

0.675

0.585

0.191 - 39.942

0.279 - 1.637

0.282 - 1.213

0.456

0.385

0.149

Occupation

Farmers

Professionals

Traders

C/S

Retired

Student/apprentice

Unemployed

1

0.668

0.731

1.602

0.737

1.411

0.317

0.194 - 2.299

0.179 - 2.984

0.438 - 5.858

0.207 - 2.622

0.372 - 5.353

0.054 - 1.855

0.523

0.662

0.476

0.637

0.613

0.202

Marital status

Single

Married

Widowed

1

3.846

1.637

1.118 - 13.233

0.728 - 3.681

0.033*

0.234