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Table 4 Estimated costs incurred per CDD during the MDA in Bong and Maryland, Liberia (US$)

From: Factors influencing mass drug administration adherence and community drug distributor opportunity costs in Liberia: a mixed-methods approach

 

Reported direct costs incurred

Reported allowance received

Net direct income

CDDs reported monthly salary (MS)

Imputed daily wage (IDW)

Reported days spent on MDA activity

Estimated opportunity cost (IDW)

Estimated opportunity cost (MDWU)

Estimated opportunity cost (MDWS)

Cost to CDD (IDW)

Cost to CDD (MDWU)

Cost to CDD (MDWS)

Range

0 to 15

0 to 30

−4 to 30

0 to 315

0 to 12.12

2 to 33

0 to 169.62

1.61 to 26.53

2.89 to 47.62

−169.62 to 30

−24.53 to 22.37

−45.62 to 17.9

Total

100.00

366.50

266.50

702.38

27.01

385.00

552.09

309.54

555.58

−285.59

−43.04

−289.08

SD

5.17

12.38

10.29

66.74

2.57

10.11

44.72

8.13

14.60

49.76

14.20

19.28

Mean

4.17

15.27

11.10

29.27

1.13

16.04

23.00

12.90

23.15

−11.90

−1.79

−12.05

95% CI

3.44 to 4.89

13.54 to 17.00

9.66 to 12.54

19.93 to 38.60

0.77 to 1.48

14.63 to 17.46

16.75 to 29.26

11.76 to 14.04

21.11 to 25.19

−18.86 to −4.94

−3.78 to 0.19

−14.74 to −9.35

Median

2.00

16.50

8.13

1.00

0.04

14.00

0.27

11.26

20.20

5.04

3.12

−6.15

IQR

0.00 to 10.00

4.63 to 30.00

2.75 to 20.00

0.00 to 28.75

0.00 to 1.11

7.00 to 23.25

0.00 to 18,75

5.63 to 18.69

10.10 to 33.55

−13.75 to 17.83

−13.22 to 8.74

−24.73 to −0.12

  1. IDW Imputed daily wage rage is calculated by dividing reported monthly salary by 26 working days per month
  2. MDWU Daily minimum wage rate for unskilled workers is US $0.804. Calculated based on a minimum hourly wage for unskilled workers of 15 Liberian dollars (from https://wageindicator.org/salary/minimum-wage/liberia (accessed 28/07/21)) multiplied by 8 (assuming 8 working hours per day) and converted to US dollars using the June 2018 exchange rate of 0.0067 (from https://live.laborstats.alaska.gov/cpi/calc.cfm (accessed 29/07/21))
  3. MDWS Daily minimum wage rate for skilled workers is US $1.4431. Calculated based on a minimum monthly wage rate for civil servants of 5600 Liberian dollars from https://wageindicator.org/salary/minimum-wage/liberia (accessed 28/07/21) divided by 26 days (per working month) and converted to US dollars as above
  4. Estimated opportunity cost = IDW, MDWU and MDWS multiplied by MDA days