Component | Definition | Response variables for analysis |
---|---|---|
Attrition | Net loss from household through discarding or use for alternative purpose | - Net presence. |
Biological efficacy | Ability of net to incapacitate or kill anopheline mosquitoes after contact with insecticide | - Mosquito knockdown (%) 60Â minutes post-exposure. |
- Mosquito mortality (%) 24Â hours post-exposure. | ||
- Percentage of bloodfed mosquitoes. | ||
Chemical residue | Amount of active ingredient in fibres | - Proportion of nets with active ingredient equal to WHO standard g/kg |
Physical degradation | Physical state of the net defined through number, size and location of holes to estimate protection against mosquito bites | - Proportionate Hole Index (pHI) / hole area by location on net. |
- Proportion of nets with a pHI exceeding ≥643 [6]. |