Table 1 Baseline, minimum and maximum values for parameters that influence project costs
Variable name | Unit | Description | Baseline | Min | Max | Determination of range |
|---|---|---|---|---|---|---|
CBTI | US$ per kg | Price of larvicide including freight costs | 51.00 | 43.00 | 54.00 | R1 |
BtiConc | Kg per hectar | Larvicide concentration | 0.35 | 0.30 | 0.40 | R2 |
Repetitions | Times per year | Number of spray rounds per year | 15 | 12 | 18 | R3 |
TotalSurface | Hectar | Total surface to treat within the region of intervention | 240 | 192 | 288 | ±20 % |
CoveredSurface | Discrete multiplier | Percentage of possible larval sources that receives treatment (exhaustive treatment = 100 %, targeted control = 50 %) | 1 in S1 scenario 0.5 in S2 scenario |  |  | Depending on defined scenario. |
CMAT | US$ per person | Costs for knapsack sprayers and protective clothes per sprayer including freight costs | 77 | 62 | 92 | ±20 % |
SprayerProductivity | Hectar per hour | Surface that one sprayer can treat per hour | 0.25 | 0.20 | 0.30 | ±20 % |
HoursDay | Hours per working day | Number of hours that spray teams work per day | 6 | 5 | 7 | Common workloads occurring during the research project |
SprayerWage | US$ per hour | Hourly wage | 0.25 | 0.20 | 0.30 | ±20 % |
SupervisorProductivity | Hectar per hour | Surface that one supervisor can control per hour (larvae dipping) | 0.5 | 0.4 | 0.6 | ±20 % |
SupervisorWage | US$ per hour | Hourly wage | 3.5 | 2.8 | 4.2 | ±20 % |
SampleSurface | Discrete multiplier | Percentage of treated surface that the supervisors check with larvae dipping for quality control | 0.2 | 0.1 | 0.3 | Limits considered to be still sound (lower limit) and economically justifiable (upper limit) |
CPM | US$ | Cost for project manager | 9800 | 7840 | 11,760 | ±20 % |
CLSM | US$ | Cost for LSM specialist | 2800 | 2240 | 3360 | ±20 % |
CMSZ | US$ | Cost for community sensitization | 1067 | 854 | 1280 | ±20 % |
CTRAIN | US$ | Cost for training events | 2600 | 2080 | 3120 | ±20 % |
CEQP | US$ | Cost for mapping equipment | 833 | 666 | 1000 | ±20 % |
CSOURCE | US$ | Mapping of larval sources | 600 | 480 | 720 | ±20 % |
CGIS | US$ | GIS map creation | 1400 | 1120 | 1680 | ±20 % |
CSAT | US$ | Satellite imagery | 550 | 440 | 660 | ±20 % |
CRISK | US$ | Risk map creation | 933 | 746 | 1120 | ±20 % |
CTRANSROUND | US$ per repetition | Transport costs, gas and allowance for fieldworkers | 300 | 240 | 360 | ±20 % |
MOVERHEAD | Discrete multiplier | Percentual share added to the subtotal costs | 0.1 | 0.1 | 0.15 | Common additions for overheads in research projects |