Table 5. Results of quantile-on-quantile...

Table 5.

Results of quantile-on-quantile regression models

	(1)	(2)	(3)
Variables	HDI	LE	GDP_gr
q25
PPrimary_SE	0.000798*** (0.000178)	0.0647** (0.0225)	0.00248 (0.0232)
Primary_SE	−0.000253 (0.000213)	0.105*** (0.0291)	−0.0677 (0.0591)
Second_SE	0.000571*** (0.000153)	0.0425* (0.0174)	0.0243 (0.0161)
Tert_SE	0.000836*** (0.000124)	0.0609** (0.0188)	−0.0173 (0.0119)
Exp_EDU	0.00549** (0.00173)	−0.438* (0.182)	−0.334* (0.154)
CO₂_E	−0.000206 (0.000664)	−0.219** (0.0794)	−0.0300 (0.113)
Renew_EC	0.0000560 (0.000268)	−0.0812*** (0.0182)	0.0335 (0.0241)
Water_P	0.0000654*** (0.00000732)	0.00426*** (0.000725)	0.00126 (0.00127)
Electric_PC	0.00000390*** (0.000000886)	0.000597*** (0.0000469)	−0.000147 (0.0000824)
_cons	0.619*** (0.0309)	52.41*** (2.686)	8.252 (6.029)
q50
PPrimary_SE	0.000810*** (0.0000974)	0.0540*** (0.0113)	−0.00797 (0.00966)
Primary_SE	0.0000304 (0.000113)	0.106*** (0.00728)	−0.0902* (0.0375)
Second_SE	0.000561** (0.000208)	0.0241* (0.00954)	0.00521 (0.0115)
Tert_SE	0.00105*** (0.000104)	0.0599*** (0.00808)	−0.0195 (0.0119)
Exp_EDU	0.00458*** (0.00118)	−0.164 (0.105)	−0.316 (0.179)
CO₂_E	−0.000484 (0.000498)	−0.239*** (0.0502)	−0.123 (0.114)
Renew_EC	−0.0000866 (0.000178)	−0.0711*** (0.0138)	0.0212 (0.0237)
Water_P	0.0000705*** (0.00000866)	0.00424*** (0.000539)	0.00107 (0.00108)
Electric_PC	0.00000304*** (0.000000423)	0.000350*** (0.0000489)	−0.0000238 (0.0000662)
_cons	0.613*** (0.0110)	57.85*** (1.724)	15.70*** (4.083)
q75
PPrimary_SE	0.000909*** (0.000128)	0.0477*** (0.00392)	0.0224 (0.0257)
Primary_SE	0.000566*** (0.000134)	0.125*** (0.0153)	−0.140 (0.0788)
Second_SE	0.000749*** (0.000141)	0.0109** (0.00347)	−0.0292 (0.0299)
Tert_SE	0.00116*** (0.000176)	0.0482*** (0.00428)	0.0485 (0.0327)
Exp_EDU	0.00277 (0.00146)	−0.139 (0.0826)	−0.384 (0.467)
CO₂_E	−0.00171* (0.000833)	−0.212*** (0.0502)	−0.304 (0.171)
Renew_EC	−0.000935*** (0.000264)	−0.0478*** (0.0102)	0.0257 (0.0515)
Water_P	0.0000734*** (0.0000107)	0.00359*** (0.000299)	0.00881*** (0.00245)
Electric_PC	0.00000353*** (0.00000606)	0.000227*** (0.0000345)	−0.000161 (0.000156)
_cons	0.570*** (0.0145)	60.17*** (1.396)	21.65** (8.237)
q90
PPrimary_SE	0.00141*** (0.000227)	0.0533*** (0.00751)	0.0850* (0.0422)
Primary_SE	0.000643* (0.000319)	0.115** (0.0352)	−0.226* (0.0977)
Second_SE	0.000690*** (0.000156)	0.0132** (0.00415)	−0.0876 (0.0554)
Tert_SE	0.000846*** (0.000192)	0.0346*** (0.00549)	0.179*** (0.0535)
Exp_EDU	−0.00137 (0.00260)	−0.109 (0.107)	−0.217 (0.850)
CO₂_E	0.00198 (0.00166)	−0.220** (0.0754)	−0.561 (0.360)
Renew_EC	−0.000693 (0.000359)	−0.0450*** (0.0128)	0.0342 (0.110)
Water_P	0.0000602** (0.0000193)	0.00306*** (0.000906)	0.0209*** (0.00552)
Electric_PC	0.00000289* (0.00000124)	0.000167** (0.0000629)	−0.000401 (0.000421)
_cons	0.559*** (0.0288)	62.34*** (3.747)	28.34** (9.351)
N	594	594	594

	(1)	(2)	(3)
Variables	HDI	LE	GDP_gr
q25
PPrimary_SE	0.000798*** (0.000178)	0.0647** (0.0225)	0.00248 (0.0232)
Primary_SE	−0.000253 (0.000213)	0.105*** (0.0291)	−0.0677 (0.0591)
Second_SE	0.000571*** (0.000153)	0.0425* (0.0174)	0.0243 (0.0161)
Tert_SE	0.000836*** (0.000124)	0.0609** (0.0188)	−0.0173 (0.0119)
Exp_EDU	0.00549** (0.00173)	−0.438* (0.182)	−0.334* (0.154)
CO₂_E	−0.000206 (0.000664)	−0.219** (0.0794)	−0.0300 (0.113)
Renew_EC	0.0000560 (0.000268)	−0.0812*** (0.0182)	0.0335 (0.0241)
Water_P	0.0000654*** (0.00000732)	0.00426*** (0.000725)	0.00126 (0.00127)
Electric_PC	0.00000390*** (0.000000886)	0.000597*** (0.0000469)	−0.000147 (0.0000824)
_cons	0.619*** (0.0309)	52.41*** (2.686)	8.252 (6.029)
q50
PPrimary_SE	0.000810*** (0.0000974)	0.0540*** (0.0113)	−0.00797 (0.00966)
Primary_SE	0.0000304 (0.000113)	0.106*** (0.00728)	−0.0902* (0.0375)
Second_SE	0.000561** (0.000208)	0.0241* (0.00954)	0.00521 (0.0115)
Tert_SE	0.00105*** (0.000104)	0.0599*** (0.00808)	−0.0195 (0.0119)
Exp_EDU	0.00458*** (0.00118)	−0.164 (0.105)	−0.316 (0.179)
CO₂_E	−0.000484 (0.000498)	−0.239*** (0.0502)	−0.123 (0.114)
Renew_EC	−0.0000866 (0.000178)	−0.0711*** (0.0138)	0.0212 (0.0237)
Water_P	0.0000705*** (0.00000866)	0.00424*** (0.000539)	0.00107 (0.00108)
Electric_PC	0.00000304*** (0.000000423)	0.000350*** (0.0000489)	−0.0000238 (0.0000662)
_cons	0.613*** (0.0110)	57.85*** (1.724)	15.70*** (4.083)
q75
PPrimary_SE	0.000909*** (0.000128)	0.0477*** (0.00392)	0.0224 (0.0257)
Primary_SE	0.000566*** (0.000134)	0.125*** (0.0153)	−0.140 (0.0788)
Second_SE	0.000749*** (0.000141)	0.0109** (0.00347)	−0.0292 (0.0299)
Tert_SE	0.00116*** (0.000176)	0.0482*** (0.00428)	0.0485 (0.0327)
Exp_EDU	0.00277 (0.00146)	−0.139 (0.0826)	−0.384 (0.467)
CO₂_E	−0.00171* (0.000833)	−0.212*** (0.0502)	−0.304 (0.171)
Renew_EC	−0.000935*** (0.000264)	−0.0478*** (0.0102)	0.0257 (0.0515)
Water_P	0.0000734*** (0.0000107)	0.00359*** (0.000299)	0.00881*** (0.00245)
Electric_PC	0.00000353*** (0.00000606)	0.000227*** (0.0000345)	−0.000161 (0.000156)
_cons	0.570*** (0.0145)	60.17*** (1.396)	21.65** (8.237)
q90
PPrimary_SE	0.00141*** (0.000227)	0.0533*** (0.00751)	0.0850* (0.0422)
Primary_SE	0.000643* (0.000319)	0.115** (0.0352)	−0.226* (0.0977)
Second_SE	0.000690*** (0.000156)	0.0132** (0.00415)	−0.0876 (0.0554)
Tert_SE	0.000846*** (0.000192)	0.0346*** (0.00549)	0.179*** (0.0535)
Exp_EDU	−0.00137 (0.00260)	−0.109 (0.107)	−0.217 (0.850)
CO₂_E	0.00198 (0.00166)	−0.220** (0.0754)	−0.561 (0.360)
Renew_EC	−0.000693 (0.000359)	−0.0450*** (0.0128)	0.0342 (0.110)
Water_P	0.0000602** (0.0000193)	0.00306*** (0.000906)	0.0209*** (0.00552)
Electric_PC	0.00000289* (0.00000124)	0.000167** (0.0000629)	−0.000401 (0.000421)
_cons	0.559*** (0.0288)	62.34*** (3.747)	28.34** (9.351)
N	594	594	594

Note(s):

Standard errors in parentheses; *p < 0.05, **p < 0.01, ***p < 0.001

Source(s): Authors’ research in Stata 18

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