Table 3 Environmental household risk factors comparing negative and positive secondary households enrolled January 2015–July 2017

N

485^a

45

ESD radius

0.56

 ≤ 140 m

194 (40.0%)

16 (35.6%)

 140–250 m

291 (60.0%)

29 (64.4%)

Distance to index household in metres, median (IQR)

164.7 (104.1, 210.1)

179.8 (121.7, 226.9)

0.17

Elevation difference with index household in metres, median (IQR)

0.0 (− 9.3, 11.0)

− 0.7 (− 8.9, 9.4)

0.52

Distance first-order stream in metres, median (IQR)

691.0 (339.6, 1033.0)

485.9 (307.5, 833.1)

0.081

Distance second-order stream in metres, median (IQR)

2008.8 (1029.5, 3498.0)

1578.8 (1029.3, 2873.5)

0.21

Distance third-order stream in metres, median (IQR)

3368.5 (1541.0, 5950.5)

3391.8 (1494.9, 5350.4)

0.63

Distance fourth-order stream in metres, median (IQR)

5363.7 (2233.4, 9001.8)

6043.9 (2503.6, 9395.2)

0.63

Distance fifth-order stream in metres, median (IQR)

5291.9 (1651.4, 8297.5)

5382.0 (1405.2, 10061.5)

0.95

Distance sixth-order stream in metres, median (IQR)

35003.7 (30907.1, 41962.9)

34138.1 (27043.0, 41075.6)

0.59

Distance Nearest Stream in metres, median (IQR)

533.2 (275.1, 795.5)

335.3 (242.2, 539.1)

0.006

Nearest stream order in metres

0.21

 First

322 (66.4%)

25 (55.6%)

 Second

50 (10.3%)

3 (6.7%)

 Third

37 (7.6%)

7 (15.6%)

 Fourth

21 (4.3%)

2 (4.4%)

 Fifth

55 (11.3%)

8 (17.8%)

Distance main road in metres, median (IQR)

8457.1 (3121.1, 13666.0)

9266.6 (4130.4, 17353.7)

0.28

Distance nearest animal pen in metres, median (IQR)

38.6 (25.7, 59.4)

36.9 (20.6, 50.5)

0.43

Number of animal pens within 100 m, median (IQR)

1.0 (0.0, 2.0)

1.0 (0.0, 1.0)

0.92

Animal pen

0.69

 No

187 (38.6%)

16 (35.6%)

 Yes

298 (61.4%)

29 (64.4%)