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Table 1 Social-ecological parameters (mean and standard deviation - SD) tested in logistic regression models to predict dengue presence (1) and absence (0) at the neighborhood level in Machala in 2010

From: Spatiotemporal clustering, climate periodicity, and social-ecological risk factors for dengue during an outbreak in Machala, Ecuador, in 2010

Parameter Mean SD
Population density   
More than four people per bedroom (% households) 14.6% 6.4%
Population density (people per square kilometer) 10,864 5,302
More than one other household sharing the home (% households) 2.2% 1.6%
People per household 3.88 0.52
Demographics   
Receive remittances (% households) 10.8% 3.2%
People emigrate for work (% households) 2.2% 1.2%
Mean age of the head of the household (years) 45.2 3.0
Head of the household has primary education or less (% households) 35.9% 12.9%
Afro-Ecuadorian (% population) 9.6% 6.9%
Head of the household is unemployed (% households) 23.0% 5.3%
Head of household is a woman (% households) 30.3% 4.5%
Housing conditions   
Housing condition index (HCI), 0 to 1, where 1 is poor condition 0.29 0.10
No access to municipal garbage collection (% households) 8.0% 12.3%
No piped water inside the home (% households) 34.4% 18.7%
No access to sewerage (% households) 22.4% 27.6%
No access to paved roads (% households) 26.7% 22.3%
People drink tap water (% households) 32.8% 11.7%
Rental homes (% households) 24.6% 10.6%
Other variables   
Average distance to the central hospital (km) 2.36 1.27
Average Breteau Index during the first two quarters of 2010 28.6 2.15