| Group 1 | Group 2 | Group 3 |  |
---|---|---|---|---|
 | <1 USD/day | 1-2 USD/day | >2 USD/day |  |
 | (n = 140) | (n = 252) | (n = 352) |  |
Studied variables | Mean (SD) | Mean (SD) | Mean (SD) | p -value |
Mean monthly household income (USD) | 23.4 (6.6) | 47.0 (8.8) | 117.4 (72.5) | <0.001a |
Mother's education (yrs) | 4.1 (3.1) | 4.8 (3.0) | 7.1 (3.8) | <0.001a |
Child height for age z-scores (HAZ) | -1.51 (1.65) | -1.42 (1.58) | -0.09 (1.58) | <0.001a |
number and % <-2HAZ | 52 (37.7%) | 89 (34.5%) | 86 (24.0%) | <0.001b |
Distance to the nearest health facility | % | % | % | Â |
   <30 minutes on foot | 42.9 | 39.5 | 60.6 | <0.001b |
   ≥ 30 minutes on foot | 29.3 | 36 | 23.7 |  |
   Not walking distance | 27.8 | 24.5 | 15.7 |  |