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Table 3 Univariate and multivariate logistic regression analysis on presence of fever (axillary body temperature > 37.5°C) in 1,767 subjects participating in six surveys from 2009 to 2012 in Bourasso village, Nouna Health District, north-western Burkina Faso

From: Declining malaria parasite prevalence and trends of asymptomatic parasitaemia in a seasonal transmission setting in north-western Burkina Faso between 2000 and 2009–2012

  Univariate Multivariate
No fever Fever OR (p-value) OR (p-value)
Season     
Wet season 69.9% (613/877) 30.1 (264/877) Reference reference
Dry season 88.8% (790/890) 11.2 (100/890) 0.29 (<0.001) 0.31 (<0.001)
Age groups*     
0–4 years 77.7% (240/309) 23.3% (69/309) Reference Reference
5–14 years 73.1% (457/625) 26.9% (168/625) 1.28 (0.13) 1.39 (0.06)
15–24 years 79.5% (186/234) 20.5% (48/234) 0.90 (0.61) 0.98 (0.94)
25–45 years 82.9% (295/356) 17.1% (61/356) 0.72 (0.09) 0.88 (0.53)
> 45 years 92.5% (221/239) 7.5% (18/239) 0.28 (<0.001) 0.31 (<0.001)
Parasite prevalence     
Slide positive [%] (total number) 73.7 (558/757) 26.3 (199/757) 1.83 (<0.001)  
Parasite density**     
no parasites 60.6% (849/1401) 45.2% (164/363) Reference Reference
1–500 parasites/μl 22.9% (321/1401) 24.8% (90/363) 1.45 (0.01) 1.00 (0.96)
501–1000 parasites/μl 5.9% (83/1401) 7.4% (27/363) 1.68 (0.028) 1.03 (0.90)
1001–2500 parasites/μl 4.6% (64/1401) 7.2% (26/363) 2.10 (0.003) 1.08 (0.77)
2501–5000 parasites/μl 2.9% (40/1401) 4.4% (16/363) 2.07 (0.018) 0.97 (0.92)
5001–10 000 parasites/μl 1.9% (26/1401) 5.0% (18/363) 3.58 (<0.001) 1.69 (0.12)
> 10 000 parasites/μl 1.3% (18/1401) 6.2% (22/363) 6.33 (<0.001) 3.08 (0.001)
cough 77.3% (136/176) 22.7 (40/176) 1.15 (0.462) 0.96 (0.85)
  1. *Information on age missing in four patients.
  2. ** Information on parasite density missing in three patients.