Plasmodium vivax and Plasmodium falciparum infections in the Republic of Djibouti: evaluation of their prevalence and potential determinants

Malaria Journal

Table 5 Multivariate ordinal logistic regression analysis of the serological response to P . vivax antigens

	N	P				RE
	N	L1	L2	L3	Total	cOR (CI95%)	aOR (CI95%)	p-value
Gender
Male	742	51	52	44	147	1	1	0.0286
Female	1168	54	65	68	187	0.79 (0.62-1.00)	0.74 (0.58-0.94)	0.0286
Educational level
Schooled	666	37	35	25	97	1	1	0.0168
Non Schooled	1244	68	82	87	237	1.41 (1.09-1.82)	1.44 (1.11-1.87)	0.0168
Staying in a malaria endemic country more than one year
Yes	167	9	18	18	45	1	1	0.0042
No	1743	96	99	94	289	0.52 (0.37-0.75)	0.53 (0.37-0.76)	0.0042
Having fever during the last month
Yes	435	25	29	36	90	1	1	0.0447
No	1475	80	88	76	244	0.75 (0.57-0.97)	0.74 (0.56-0.97)	0.0447
Distance to rivers and lakes (Km)
> 1.5 Km	1210	66	65	60	191	1	1	0.0301
≤ 1.5 Km	700	39	52	52	143	1.39 (1.09-1.76)	1.35 (0.56-0.97)

N = number; P = seropositivity to P. vivax; L = level of intensity of immunological response (seropositivity to P. vivax antigens) measured in MFI with 3 levels: 1, 2, 3 corresponding respectively to 1000 ≤ MFI < 2000, 2000 ≤ MFI < 10000 and MFI ≥ 10000. The level L0 is not shown here as it’s corresponding to value of MFI < 1000 considered as negative reaction. RE = Random effect; cOR = Crude Odd ratio; aOR = Adjusted Odd ratio; CI95% = Confident interval 95%.