Table 4

Assessment of endogeneity test using two-stage ordinary regression approach results

Endogeneity testOver identification test (instruments are valid)
VariableNull hypothesisDurbin X2 score (p-value)Wu–Hausman (p-value)Null hypothesisSargan X2 score (p-value)Basmann X2 (p-value)
SORGH0: SORG0.045 (0.832)0.043 (0.836)H0: SORG1.677 (0.195)1.620 (0.203)
ADAPTH0: ADAPT1.715 (0.190)1.656 (0.201)H0: ADAPT0.578 (0.447)0.553 (0.457)
NTWKSH0: NTWK1.839 (0.175)1.780 (0.185)H0: NTWKS0.393 (0.531)0.375 (0.540)

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