Fig. 2

a-d Tornado diagram from deterministic sensitivity analysis (univariate analysis). Variation include the discount rate used to annualized costs to 0 and 13% (base case is 3%) to capture the impact of not discounting. Annualization (economic life years) time frames: training & sensitization were varied between 1 and 3 years (base: 2 years) and equipment life between 2.5 and 7.5 years (base: 5 years) to assess the impact of the assumed project life years on costs. Cost which shown as key drivers of total cost by ± 10% from the base case (personnel salaries, cost of supervision, coordination meeting at SR level and office running cost) were also varied