Table 3 Tobit regression results of factors affecting willingness to pay for improved waste management services in Injibara town North west Ethiopia, 2018 (n = 903)
Parameter for MWTP | Coefficients | Standard error | t-value | p-value | 95% CI | Marginal effect (dy/dx) |
|---|---|---|---|---|---|---|
Sex (ref. female) | ||||||
Male | 3.24 | 0.64 | 5.06 | 0.000*** | 1.98, 4.50 | 0.00008 |
Age | − 0.09 | 0.05 | − 2.01 | 0.044* | − 0.188, − 0.002 | − 2.4e−06 |
Education (ref. no education) | ||||||
Primary school | 0.93 | 1.19 | 0.79 | 0.431 | − 1.39, 3.27 | |
Secondary school | 3.53 | 1.14 | 3.11 | 0.002** | 1.29, 5.760 | |
College and above | 6.19 | 1.35 | 4.58 | 0.000*** | 3.54, 8.84 | 0.00006 |
Occupation(ref. unemployed) | ||||||
Self-employees | 0.55 | 0.85 | 0.64 | 0.521 | − 1.12, 2.21 | |
Civil servants | 3.43 | 1.09 | 3.14 | 0.002** | 1.28, 5.58 | 0.00005 |
Family size | 0 .34 | 0.28 | 1.19 | 0.235 | − 0.22,0.89 | |
Marital status (ref. other than married) | ||||||
Married | 0.38 | 0.94 | 0.40 | 0.687 | − 1.47, 2.23 | |
Solid waste generated (ref. < 1 sack) | ||||||
≥ 1 sacks | 1.74 | 0.79 | 2.20 | 0.028* | 0.19, 3.29 | 0.00004 |
Distance of dump site (ref. near) | ||||||
Far | 1.58 | 0.57 | 2.75 | 0.006** | 0.45, 2.72 | 0.00004 |
Awareness (ref. poor awareness) | ||||||
Good awareness | 0.12 | 1.25 | 0.09 | 0.927 | − 2.33, 2.56 | |
Homeownership (ref. No) | ||||||
Yes | 0.59 | 0.80 | 0.73 | 0.463 | − 0.99,2.17 | |
Time stay in the Town | 0.005 | 0.04 | 0.14 | 0.891 | − 0.067, 0.077 | |
Perceived satisfaction (ref. dissatisfied) | ||||||
Satisfied | 3.89 | 0.58 | 6.67 | 0.000*** | 2.75, 5.05 | 0.0001 |
Wealth status (ref. poor) | ||||||
Medium | 0.74 | 0.74 | 0.99 | 0.322 | − 0.72, 2.20 | |
Rich | 2.43 | 0.72 | 3.35 | 0.001** | 1.009, 3.86 | 0.00003 |