Table 2.
Rationale and evidence for dropping water insecurity module items
| Analysis informing decision | Item dropped (item number)* | Rationale |
| Descriptive statistics | Loan water (1.24) | Not salient |
| Too sick or weak (1.30) | Not salient | |
| Treat water (1.20) | Not salient | |
| Take medications (1.29) | Too rare | |
| Crops (1.5, 2.6) | Not universal | |
| Livestock (1.6, 2.7) | Not universal | |
| Caring for children (1.10) | Not universal | |
| Miss school (1.12, 2.11) | Not universal | |
| Wash face and hands of children (1.16, 2.15) | Not universal | |
| Worry about safety of person (1.2, 2.4) | Not universal | |
| Lacked money (1.8, 2.9) | Not universal | |
| Nowhere to buy (1.9, 2.10) | Not universal | |
| Earning money (1.7, 2.8) | Not universal | |
| Item correlations (EFA) | Quarrel - neighbours (1.25, 2.22) | Poor item correlation coefficients |
| Quarrel - household (1.26, 2.23) | Poor item correlation coefficients | |
| Taste bad (1.21, 2.19) | Poor item correlation coefficients | |
| Drank unsafe (1.22, 2.20) | Poor item correlation coefficients | |
| Borrow (1.23, 2.21) | Poor item correlation coefficients | |
| Moving (1.3, 2.28) | Poor item correlation coefficients | |
| Item correlations (Rasch) | Attend social events (1.19, 2.18) | Redundant (highly correlated with “day interrupted”) and poor phrasing |
| Chores (1.11) | Redundant (highly correlated with “wash clothes”) and poor phrasing | |
| Preferred (2.2) | Redundant (highly correlated with “worry about enough”) and poor phrasing |
*Complete item numbering in online supplementary table 1.