Table 5.
Bivariate analysis of confounding effect of socio-demographic variables
| Socio-demographic variables | RR (Adjusted) |
95% Confidence Interval |
P-value | |
| Lower | Upper | |||
| Gender | ||||
| Male | 1.33 | 0.76 | 2.31 | .112 |
| Female | 1.69 | 0.80 | 3.57 | |
| Income (Yemeni Rial) | ||||
| Less than 40,000 | 3.64 | 1.82 | 7.29 | .011* |
| 41,000 – 70,000 | 1.22 | 0.63 | 2.38 | |
| 71,000 – 100,000 | 1.16 | 0.40 | 3.41 | |
| More than 100,000 | 0.46 | 0.16 | 1.37 | |
| Education | ||||
| Primary, Secondary & High school | 3.41 | 1.18 | 9.87 | .006* |
| College | 1.75 | 1.00 | 3.05 | |
| University Degree & Postgraduate | 1.13 | 0.54 | 2.35 | |
*
Mantel-Haenszel test