Table 4.

Negative binomial regression modeling of correlates of severe malaria (n = 21).

Variable	Risk Ratio (IRR)	95% CI	p-Value	Adjusted RR	95% CI	p-Value
Sex
Male	1.86	0.89–3.87	0.10	3.05	1.40–6.64	0.005
Age Category
≥15 years	REF	REF	REF	REF	REF	REF
5 to 14 years	2.62	0.99–6.93	0.05	5.90	0.77–45.2	0.09
<5 years	4.70	1.60–13.8	0.005	8.39	1.06–66.6	0.04
Parasitemia
<2,500/μl	REF	REF	REF	REF	REF	REF
2,500–10,000/μl	0.76	0.11–5.25	0.78	0.42	0.04–4.76	0.48
10,000–100,000/μl	3.49	0.81–15.1	0.09	1.12	0.28–4.46	0.88
≥100,000/μl	10.7	2.54–44.9	0.001	5.38	1.39–20.8	0.02
Fever
Febrile	2.24	1.09–4.56	0.03	1.14	0.53–2.49	0.73
MOI Category
MOI=1	REF	REF	REF	REF	REF	REF
MOI=2	1.06	0.42–2.67	0.91	1.47	0.57–3.78	0.42
MOI≥3	0.49	0.17–1.39	0.18	0.65	0.25–1.73	0.39