Volume 24, Number 2—February 2018
Research
Role of Environmental Factors in Shaping Spatial Distribution of Salmonella enterica Serovar Typhi, Fiji
Table 3
Relative contributions of predictor variables from an ensemble of 50 boosted regression tree models for typhoid fever seropositivity developed with cross-validation on data from 1,305 samples and 11 variables, Fiji
Variable | Data type | Relative contribution, % (95% CI) |
---|---|---|
Age, y | Continuous | 33.0 (31.1–34.8) |
Longitude, °E | Continuous | 15.5 (14.7–16.0) |
Distance from major rivers and creeks, m | Continuous | 14.5 (13.6–15.3) |
Annual rainfall, mm | Continuous | 9.3 (8.5–10.0) |
Distance from flood-risk areas, m | Continuous | 7.7 (6.8–8.4) |
Latitude, °S | Continuous | 6.9 (5.6–7.9) |
Education | Categorical | 4.2 (3.8–4.6) |
Urbanization | Categorical | 3.3 (2.9–3.8) |
Typhoid fever vaccination | Binary | 2.3 (2.1–2.5) |
Sewage disposal | Categorical | 1.8 (1.5–2.2) |
Toilet type at home | Categorical | 0.8 (0.6–1.2) |
Page created: January 17, 2018
Page updated: January 17, 2018
Page reviewed: January 17, 2018
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.