Table I.
Mean Elasticity Estimates of the Three Most Frequently Examined Water Quality Measures.
| Water quality measure | Unweighted Mean (1) | Cluster Weighted Mean (2) | Variance-Adjusted Cluster (VAC) Weighted Mean (3) | RES Cluster-Adjusted (RESCA) Weighted Mean (4) | n | Studies | Clusters (Kd) |
|---|---|---|---|---|---|---|---|
| Chlorophyll a (mg/L) | |||||||
| waterfront | 0.737* [−0.044, 1.517] |
0.324* [−0.036, 0.684] |
−0.023*** [−0.028, −0.019] |
−0.026*** [−0.031, −0.021] |
18 | 3 | 3 |
| non-waterfront w/in 500 m | 0.005 [−0.201, 0.211] |
0.01 [−0.085, 0.105] |
0.008*** [0.005, 0.010] |
0.009*** [0.006, 0.012] |
18 | 3 | 3 |
| Fecal coliform (count per 100 mL) | |||||||
| waterfront | −0.018*** [−0.026, −0.011] |
−0.037 [−0.088, 0.014] |
−0.028 [−0.079, 0.023] |
−1.3E-4*** [−1.8E-4, −0.7E-4] |
36 | 4 | 4 |
| non-waterfront w/in 500 m | −0.020*** [−0.034, −0.006] |
−0.058* [−0.127, 0.010] |
−0.061* [−0.129, 0.008] |
−0.052** [−0.096, −0.008] |
20 | 3 | 3 |
| Water clarity (Secchi disk depth, meters) | |||||||
| waterfront | 0.158 [−6.099, 6.416] |
0.206 [−16.575, 16.987] |
0.191 [−16.590, 16.972] |
0.109*** [0.099, 0.118] |
177 | 18 | 66 |
| non-waterfront w/in 500 m | 0.028*** [0.020, 0.036] |
0.042*** [0.025, 0.059] |
0.041*** [0.024, 0.058] |
0.026*** [0.017, 0.034] |
83 | 6 | 19 |
p<0.01,
p<0.05,
p<0.1.
Confidence intervals at the 95% level are displayed in brackets. Only elasticity estimates pertaining to the three most commonly examined water quality measures in the hedonic literature are presented, but the full suite of mean elasticity estimates are presented in Appendix B.2. We present the respective units for each water quality measure in parentheses just as a reference, but emphasize that the elasticity estimates are unit-less.