Table 2.

Association between parasitaemia, as detected by RT-PCR, and mother age, pregnancy status and signs/symptoms of malaria.

		PCR
		negative n = 218		positive n = 66
Variable		n	%	n	%	OR	95% CI	p-value*
Age**	<20 y	38	18	16	24	1		0.480
	20–34 y	156	72	44	67	0.67	(0.34; 1.31)
	>= 35 y	22	10	6	9	0.65	(0.22; 1.90)
Gestational age (weeks)	1–12	64	29	13	20	1		0.082
	13 – 24	58	27	13	20	1.10	(0.47; 2.57)
	> 24	96	44	40	61	2.05	(1.02; 4.14)
Parity***	0	28	13	4	6	1		0.094
	1–3	122	56	46	70	2.64	(0.88; 7.94)
	>= 4	67	31	16	24	1.67	(0.51; 5.45)
Season	Dry	108	50	35	53	1		0.684
	Wet	110	50	31	47	0.87	(0.50; 1.51)
Fever	No	200	92	61	92	1		1.000
	Yes	18	8	5	8	0.91	(0.32; 2.55)
Fever/history of fever***	No	84	39	27	41	1		0.772
	Yes	133	61	39	59	0.91	(0.52; 1.60)
Arthromyalgia	No	55	25	11	17	1		0.176
	Yes	163	75	55	83	1.69	(0.82; 3.45)
Headache	No	24	11	7	11	1		1.000
	Yes	194	89	59	89	1.04	(0.43; 2.54)
Pallor	No	205	94	64	97	1		0.568
	Yes	13	6	2	3	0.49	(0.11; 2.24)
Anemia	No	121	56	26	39	1		0.026
	Yes	97	44	40	61	1.92	(1.09; 3.36)

*, Univariate logistic regression model; **, Two data missing; ***, One data missing; OR, Odds ratio; CI, Confidence interval.