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. 2023 Oct 10;9(10):e20819. doi: 10.1016/j.heliyon.2023.e20819

Table 4.

Estimates of the ESP model for Y1 and Y2.

Variable Cooperative membership (CM)
Y1 = 1
Y1 = 0
Cooperative membership (CM)
Y2 = 1
Y2 = 0
Coef.(S.E.) Coef. (S.E.) Coef. (S.E.) Coef. (S.E.) Coef. (S.E.) Coef. (S.E.)
Gender(se) 0.451***(0.159) −0.294(0.336) −0.0897(0.173) 0.440***(0.16) 0.211(0.251) −0.0446(0.166)
Age (ag) 0.05 (0.0424) 0.124*(0.0713) 0.100**(0.0509) 0.0497(0.0424) 0.0646(0.06) 0.0903*(0.0526)
Square of age (ag2) −0.000516*(0.000403) −0.00097(0.000711) −0.000942**(0.000463) −0.000509(0.000403) −0.000615(0.000588) −0.000950*(0.000492)
Education (edu) 0.333***(0.0669) 0.155(0.129) −0.121(0.1) 0.348***(0.0668) 0.118(0.106) 0.0048(0.102)
Proportion of household farmers(fa) 0.0946(.) 0.281(0.372) −0.139(0.275) 0.135(0.227) 0.574*(0.304) −0.148(0.274)
Operating cultivated land area (mu)(lad) 0.00212***(0.000761) −0.000206(0.000311) 0.0126(0.0137) 0.00223***(0.000794) 0.00027(0.000311) 0.000146(0.00249)
Income (inc) 0.0791(0.081) −0.112(0.116) 0.417***(0.121) 0.0779(0.0812) 0.0386(0.0981) 0.286***(0.102)
Difficulty of bank loan(loa) 0.108(0.0768) 0.0623(0.139) 0.518***(0.102) 0.101(0.0771) −0.0875(0.116) 0.304***(0.0845)
Social relationship (sr) −0.0645(0.171) 0.615**(0.286) −0.0814(0.235) −0.0216(0.169) 0.774***(0.226) −0.105(0.227)
Cognition of green product benefits (cog) 0.233*(0.121) 0.264(0.197) −0.135(0.148) 0.251**(0.12) 0.143(0.165) −0.155(0.141)
Share of villagers in co-operatives (RPC) 0.936***(0.134) 0.894***(0.136)
Constant −3.744***(0.134) −3.498* (2.121) −4.119***(1.513) −3.783***(1.137) −2.639(1.777) −3.579**(1.485)
ρμ1 0.243 0.333 0.628*
ρμ2 −0.632** 0.316 −0.371
LR test of indep. eqns. (rho1 = rho0 = 0):chi2(2) = 4.23; Prob > chi2 = 0.1206 LR test of indep. eqns. (rho1 = rho0 = 0):chi2(2) = 5.18; Prob > chi2 = 0.0751
Log likelihood = −606.74342; Wald chi2(11) = 178.48 Log likelihood = −685.9897; Wald chi2(11) = 178.83

Notes: ***, **, and * represent significance at the 1 %, 5 %, and 10 % levels, respectively.