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Table 4 Parameter estimates and validation measures of Bayesian geostatistical models for hookworm, A. lumbricoides and T. trichiura infection risks in Côte d’Ivoire, late 2011/early 2012

From: Bayesian risk profiling of soil-transmitted helminth infections and estimates of preventive chemotherapy for school-aged children in Côte d'Ivoire

Hookworm

OR (95 % BCI)

Setting

 

 Rural

1.0

 Urban

0.3 (0.2, 0.5)a

 

Median (95 % BCI)

Variance

1.1 (0.5, 6.3)

Spatial range (km)

217.6 (94.4, 585.1)

 

Model validation measuresb

Mean error (ME) (%)

0.3

Sum standard deviation (SD) (%)

2.2

A. lumbricoides

OR (95 % BCI)

Soil acidity (pH)

 

 < 5.2

1.0

 5.2–5.4

0.3 (0.1, 0.9)a

 ≥ 5.4

0.1 (0.0, 0.4)a

Soil moisture

2.4 (1.4, 4.0)a

 

Median (95 % BCI)

Variance

1.5 (0.6, 3.8)

Spatial range (km)

75.8 (6.3, 429.2)

 

Model validation measuresb

Mean error (ME) (%)

−2.1

Sum standard deviation (SD) (%)

1.0

T. trichiura

OR (95 % BCI)

Rainfall coefficient of variation (CV)

2.0 (1.3, 3.2)a

 

Median (95 % BCI)

Variance

2.3 (1.0, 5.0)

Spatial range (km)

20.5 (5.9, 80.5)

 

Model validation measuresb

Mean error (ME) (%)

−0.2

Sum standard deviation (SD) (%)

0.6

  1. aSignificant based on 95 % BCI
  2. bAssessed by fitting the model on a subsample of the data (80 %)