Table 4 Uni-variate and multi-variate analysis of factors associated with sub-microscopic Plasmodium falciparum infection*
| Â | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
| Â | OR(95%CI) | p -value | OR(95%CI) | p -value |
Age group, years | ||||
0-4 | 1.00 | - | 1.00 | - |
5-14 | 0.99(0.70-1.41) | 0.947 | 0.83 (0.50-1.58) | 0.438 |
15-45 | 1.18(0.79-1.77) | 0.375 | 1.00 (0.70-.41) | 0.981 |
Transect/distance from ocean | ||||
Rombo | 1.00 | - | 1.00 | - |
South Pare | 1.21 (0.23-6.36) | 0.802 | 1.01 (0.47-2.16) | 0.985 |
West Usambara | 4.46 (0.88-22.49) | 0.067 | 4.80 (1.79-12.86) | 0.005 |
Tanga coast | 23.86(7.00-81.29) | < 0.0001 | 8.61 (2.36-31.40) | 0.003 |
Altitude band | ||||
< 600 m | 1.00 | - | 1.00 | - |
600-1200 m | 0.28 (0.08-1.01) | 0.052 | 0.40 (0.14-1.14) | 0.081 |
> 1200 m | 0.10 (0.02-0.43) | 0.005 | 0.12 (0.03-0.50) | 0.007 |
Bed net use | 0.70 (0.25-1.96) | 0.468 | 0.71 (0.40-1.26) | 0.218 |
Sex | 1.09 (0.76-1.56) | 0.629 | 1.13 (0.60-2.12) | 0.679 |
Fever | 1.07 (0.55-2.07) | 0.827 | 0.85 (0.53-1.35) | 0.450 |
Treatment | 0.70 (0.43-1.15) | 0.143 | 0.77 (0.44-1.35) | 0.325 |