Table 1.
Cost comparison of conventional versus actual sampling strategy in Gansu
| Assumptions | Scenarios Conventional household listing |
Actual satellite-aided household listing |
||||
|---|---|---|---|---|---|---|
| Optimistic (easy access) |
Realistic (medium access) |
Conservative (difficult access) |
||||
| Number of sites for listing | 16 | 16 | 16 | 16 | ||
| Number of team days per site | 0.5 | 0.75 | 1 | 0 | ||
| Number of required overnight stays | 4 | 6 | 8 | 0 | ||
| Household listing costs in planned design | Optimistic | Realistic | Conservative | Actual | ||
|---|---|---|---|---|---|---|
| Item | Unit | Costs/unit | Total costs | Total costs | Total costs | Total costs |
| Field investigator (×6) | Daily rate p.p. | £18.42 | £884.21 | £1326.32 | £1768.42 | |
| Supervisor (×2) | Daily rate p.p. | £23.68 | £378.95 | £568.42 | £757.89 | |
| Vehicle (incl. driver, fuel) | Daily rate | £76.84 | £614.74 | £922.11 | £1229.47 | |
| Insurance (×8) | Daily rate p.p. | £0.17 | £11.02 | £16.53 | £22.05 | |
| Team accommodation (×9) | Night p.p. | £15.79 | £568.42 | £852.63 | £1136.84 | |
| Overseas travel allowance | Daily rate | £50.00 | £400.00 | £600.00 | £800.00 | |
| Smartphone | Unit | £100.00 | £100.00 | |||
| Printing | Total charges | £40.00 | £40.00 | |||
| Mobile data charges | Total charges | £30.00 | £30.00 | |||
| Labour costs for satellite sampling | Hourly rate | £15.00 | (£960.00) | |||
| Touchscreen laptop | Unit | £700.00 | (£700.00) | |||
| GPS units | Unit | £18.00 | (£180.00) | |||
| Total | £2857.34 | £4286.01 | £5714.68 | £170–2010 | ||
Source: own elaboration
Data based on actual expenditures. Assumed exchange rate: GBP 1.00 = CNY 9.50. Expenditures in parentheses are likely to arise in other research but did not accrue in the present study