Prevalence of subpatent Plasmodium falciparum infections in regions with varying transmission intensities and implications for malaria elimination in Mainland Tanzania

Table 4 Linear regression analysis of factors associated with parasite density of subpatent infections among RDT-negative samples from 14 regions of Mainland Tanzania

	Health facility model				Cross-sectional survey model
Variable	Crude Coef β	95% CI, P-value	Adj Coef β	95% CI, P-value	Crude Coef β	95% CI, P-value	Adj Coef β	95% CI, P-value
Sex
Male	− 0.431	− 1.052–0.191, p = 0.173	− 0.51	− 1.128–0.109, p = 0.106	1.437	0.2 00–2.674, p = 0.023	1.382	0.061–2.703, p = 0.041*
Female		Reference		Reference		Reference		Reference
Age in years	− 0.009	− 0.025–0.007, p = 0.284			− 0.025	− 0.049–0.002, p = 0.04
Age group
< 5 years	2.297	1.464–3.131, p = 0.003	0.194	− 0.494–0.882, p = 0.579	− 0.533	− 2.452–1.386, p = 0.583	− 1.54	− 3.859–0.78, p = 0.191
5–15 years	− 0.172	− 1.385–1.041, p = 0.78	− 0.269	− 1.153–0.616, p = 0.55	1.374	0.043–2.704, p = 0.043	1.416	0.133–2.7, p = 0.031*
> 15 years		Reference		Reference		Reference		Reference
Transmission strata
Moderate	1.189	0.005–2.373, p = 0.049	1.248	0.251–2.245, p = 0.014	− 0.905	− 1.954–0.145, p = 0.09	− 0.162	− 1.292–0.967, p = 0.776
Low	5.187	4.169–6.205, p = 0	2.276	1.181–3.372, p < 0.001
Very low	0.789	− 0.156–1.734, p = 0.102	0.759	− 0.039–1.558, p = 0.062
High		Reference		Reference
Fever at presentation
Yes	− 0.157	− 0.781–0.470, p = 0.622	− 0.378	− 0.999–0.244, p = 0.232
No		Reference		Reference

atemp axillary temperature, aOR adjusted odds ratio, uOR unadjusted odds ratio

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