Appendix A. Supplementary data【数据+Stata】 示例代码 importexcel"C:\Download\1-s2.0-S0140988323003742-mmc1\dataa.xlsx",sheet("trimestral")firstrowgentime=tq(2003q1)+_n-1formattime%tqtssettimedfglspib,notrend 得到结果 DF-GLS test for unit root Number of obs = 57 Variable: pib Lag selecti...