Table 4.

Results of quantile-on-quantile regression models

(1)(2)(3)(4)(5)
VariablesCO2_ERenew_ECWater_PAgri_PElectric_PC
q25
PPrimary_SE−0.0138 (0.0108)0.0441 (0.0428)−0.0923 (0.0624)12.24 (11.43)5.104 (5.698)
Primary_SE−0.0498 (0.0321)−0.110 (0.218)−0.126 (0.162)−4.061 (34.20)46.09*** (8.562)
Second_SE0.0124 (0.0163)−0.0876** (0.0339)−0.255** (0.0772)53.78** (18.56)13.15 (7.996)
Tert_SE−0.0405*** (0.0120)0.164*** (0.0362)−1.043*** (0.199)16.17** (6.115)−20.75*** (5.787)
Exp_EDU−0.164 (0.156)−0.0194 (0.517)5.271** (1.854)−380.7** (115.4)5.220 (77.10)
GDP_gr−0.0794*** (0.0112)0.0627 (0.128)−0.153 (0.325)−25.95 (20.98)−43.00*** (9.737)
HDI18.97*** (4.392)22.54 (17.92)663.3*** (76.33)−4,129.8 (3,911.8)20,336.3*** (2,310.8)
_cons−2.582 (4.408)−3.884 (25.28)−429.9*** (52.47)−218.7 (2,575.3)−18,017.2*** (1,793.9)
q50
PPrimary_SE−0.0323** (0.0123)−0.174*** (0.0488)−0.365 (0.344)19.93 (17.55)11.14* (5.003)
Primary_SE−0.0386* (0.0182)0.105 (0.0835)0.513 (0.407)−42.63 (44.01)33.98** (10.82)
Second_SE0.00722 (0.0160)0.0677 (0.131)−0.527* (0.257)41.38*** (10.92)13.18 (12.16)
Tert_SE−0.0504*** (0.0108)0.248*** (0.0266)−1.942*** (0.555)−9.047 (14.95)−18.98* (8.957)
Exp_EDU−0.272 (0.170)−0.258 (0.553)5.304 (6.014)−1,281.0*** (335.1)111.7 (192.6)
GDP_gr−0.118*** (0.0136)0.146** (0.0498)0.767 (0.720)−37.32 (25.10)−48.31*** (12.99)
HDI30.76*** (3.949)25.74* (10.97)1,098.4*** (197.3)30,935.2*** (7,899.2)22,284.2*** (2,554.2)
_cons−8.736*** (2.583)−22.52 (12.03)−731.8*** (121.9)−17,401.8*** (4,446.3)−18,822.4*** (2,055.2)
q75
PPrimary_SE−0.0385*** (0.00789)−0.268*** (0.0394)−0.754* (0.320)197.9** (76.11)−19.64 (17.67)
Primary_SE−0.112*** (0.0334)0.374*** (0.0973)0.846 (0.724)−92.88 (93.19)32.88 (30.65)
Second_SE0.0220 (0.0133)0.137* (0.0636)−1.869** (0.678)−211.7*** (52.36)12.11 (11.80)
Tert_SE−0.0694*** (0.0126)0.419*** (0.0506)−3.239*** (0.677)−157.3*** (25.26)−31.25* (13.49)
Exp_EDU−0.577* (0.231)−1.306 (0.772)9.553 (7.784)−2,950.6*** (586.2)472.0 (293.8)
GDP_gr−0.129*** (0.0159)0.312* (0.125)2.129* (0.896)−124.3 (79.31)−12.35 (28.82)
HDI33.61*** (4.970)38.48 (21.27)2,188.1*** (263.8)130,850.3*** (15,228.7)33,007.8*** (9,286.4)
_cons−0.163 (4.323)−56.88*** (17.14)−1,399.1*** (162.5)−60,273.4*** (14,634.8)−24,528.6*** (5,719.6)
q90
PPrimary_SE−0.0167 (0.0218)−0.235*** (0.0627)−2.873 (1.589)246.0*** (61.21)−95.01*** (23.51)
Primary_SE−0.233*** (0.0412)0.481*** (0.138)−4.062 (3.055)36.01 (145.8)−131.4** (43.30)
Second_SE−0.0236 (0.0220)0.0562 (0.0887)−6.153*** (1.083)−147.8 (113.0)−8.638 (19.49)
Tert_SE−0.0913*** (0.0180)0.386*** (0.0539)−6.579*** (1.984)−143.4** (48.69)−56.52*** (6.544)
Exp_EDU−0.164 (0.241)0.634 (1.350)1.956 (36.41)−2,111.8 (2,678.6)1,282.8*** (220.6)
GDP_gr−0.0548 (0.0641)0.435** (0.135)2.109 (2.532)−121.9 (150.1)41.13 (46.24)
HDI34.57* (14.45)55.38 (29.66)5,070.3*** (1,410.7)126,983.5*** (13,224.3)57,328.9*** (5,623.3)
_cons15.70 (12.94)−78.59** (24.65)−2,297.7*** (585.4)−79,343.5** (24,114.0)−19,384.6** (7,321.1)
N594594594594594
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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