Table A2

Wald Tests of Random Parameters Logit (RPL) Model Coefficient Equality

H0RPL 1RPL 2
Wald x2Dfp <Wald x2Dfp >
Equality within Subbasins
Valle
 Good = Very good4.8410.0280.2610.612
Campiña
 Moderate = Good1.9811.1591.3010.254
 Good = Very good10.6910.0010.4310.510
Doñana
 Good = Very good2.0010.1577.6910.006
Equality between Subbasins
Good quality
 Valle = Campiña3.5410.0601.6310.201
 Valle = Doñana18.6210.0015.5410.019
 Campiña = Doñana38.8010.00112.9910.001
Very good quality
 Alto = Valle41.1810.0017.9910.005
 Alto = Campiña69.0410.00114.9010.001
 Alto = Doñana0.4110.5233.1510.076
 Valle = Campiña7.2810.0071.9610.162
 Valle = Doñana29.2310.0010.8810.347
 Campiña = Doñana58.8210.0015.0410.025