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Table 3 Factors associated with Aedes aegypti (adults or immatures) presence in 118 storm drains with accumulated water, Salvador, Brazil, 2015

From: Storm drains as larval development and adult resting sites for Aedes aegypti and Aedes albopictus in Salvador, Brazil

Characteristic No. with available data No. with Aedes aegypti (%) Crude OR (95 % CI) Adjusted OR (95 % CI)
Organic matter    
 No organic matter 22 3 (13.6) 1  
 With organic matter 96 15 (15.6) 1.2 (0.3–4.5)  
Shade    
 No shade 64 9 (14.0) 1  
 Indirect shade 37 5 (13.5) 1.0 (0.3–3.1)  
 Direct shade 17 4 (23.5) 1.9 (0.5–7.1)  
Turbidity of watera    
 No turbid 61 7 (11.5) 1  
 Turbid 47 11 (23.4) 2.4 (0.8–6.7)  
Water odora    
 No odor 51 10 (19.6) 1  
 With odor 59 8 (13.6) 0.6 (0.2–1.8)  
Non-Aedes mosquitoesb    
 Absent 87 5 (5.8) 1 1
 Present 31 13 (41.8) 11.8 (3.8–37.4) 7.8 (2.3–25.8)
Water volumea    
 ≤ 40 l 57 14 (24.6) 1  
 > 40 l 58 4 (6.9) 0.2 (0.1–0.7)  
Precipitation during the previous 7 days    
 ≤ 50 mm 53 15 (28.3) 1 1
 > 50 mm 65 3 (4.6) 0.1 (0.0–0.5) 0.2 (0.1–0.8)
  1. aData on water turbidity, odor and volume were not collected for 10, 10 and 3 storm drains, respectively
  2. bNon-Aedes mosquitoes: includes adult mosquitoes and immatures