Variable
|
Unadjusted odds ratio (95 % CI)
|
p value
|
Adjusted odds ratio (95 % CI)
|
p value
|
---|
District
|
Blantyre
|
Referent
|
Referent
|
Referent
|
Referent
|
Chiradzulu
|
0.85 (0.55–1.3)
|
0.48
|
1.1 (0.67–1.7)
|
0.75
|
Karonga
|
0.95 (0.60–1.5)
|
0.83
|
1.0 (0.61–1.6)
|
0.98
|
Lilongwe
|
1.4 (0.91–2.3)
|
0.12
|
2.0 (1.2–3.1)
|
0.004
|
Mwanza
|
1.0 (0.69–1.6)
|
0.84
|
1.4 (0.88–2.2)
|
0.16
|
Nkhotakhota
|
0.60 (0.39–0.93)
|
0.02
|
0.78 (0.48–1.3)
|
0.31
|
Phalombe
|
1.8 (1.1–3.0)
|
0.02
|
2.5 (1.5–4.4)
|
<0.001
|
Rumphi
|
2.3 (1.3–3.9)
|
0.002
|
2.5 (1.5–4.3)
|
<0.001
|
Age category
|
15–19 years old
|
1.1 (0.67–1.8)
|
0.70
|
1.1 (0.64–1.8)
|
0.82
|
20–24 years old
|
1.1 (0.73–1.6)
|
0.68
|
1.0 (0.65–1.5)
|
0.91
|
25–29 years old
|
1.6 (1.0–2.4)
|
0.04
|
1.3 (0.89–2.0)
|
0.16
|
30–34 years old
|
1.4 (0.93–2.0)
|
0.11
|
1.3 (0.85–1.9)
|
0.26
|
35–49 years old
|
Referent
|
Referent
|
Referent
|
Referent
|
Education
|
None
|
Referent
|
Referent
|
Referent
|
Referent
|
Some primary school
|
1.3 (0.92–1.9)
|
0.13
|
1.4 (1.0–2.0)
|
0.07
|
Completed primary school
|
1.4 (0.88–2.4)
|
0.15
|
1.6 (1.0–2.6)
|
0.05
|
Some secondary school
|
1.7 (0.99–2.9)
|
0.05
|
1.9 (1.1–3.3)
|
0.03
|
Completed secondary school or above
|
4.2 (2.1–8.5)
|
<0.001
|
4.1 (1.9–8.7)
|
<0.001
|
Socioeconomic status by asset index
|
Poorest
|
0.50 (0.34–0.74)
|
<0.001
|
0.68 (0.48–0.97)
|
0.03
|
Less poor
|
0.59 (0.40–0.88)
|
0.01
|
0.81 (0.55–1.2)
|
0.29
|
Middle
|
0.59 (0.40–0.86)
|
0.006
|
0.74 (0.52–1.1)
|
0.11
|
More rich
|
0.72 (0.48–1.1)
|
0.11
|
0.90 (0.61–1.3)
|
0.57
|
Least poor
|
Referent
|
Referent
|
Referent
|
Referent
|
Used insecticide treated bed net previous night
|
1.2 (0.97–1.6)
|
0.08
|
1.2 (0.97–1.6)
|
0.09
|
Used untreated bed net previous night
|
1.6 (0.88–2.8)
|
0.13
|
1.4 (0.85–2.4)
|
0.18
|
-
95 % CI 95 % confidence interval