Cohort | AC_SPEC by entrepreneurs | AC_SPEC by non-entrepreneurs | Difference | t-value of difference |
---|---|---|---|---|
1982-1986 | 12.4 [0.49] | 12.6 [0.29] | 0.20 | 0.35 |
1987-1991 | 12.3 [0.53] | 12.2 [0.29] | −0.09 | −0.14 |
1992-1996 | 13.0 [0.60] | 13.1 [0.31] | 0.10 | 0.15 |
1997-2001 | 13.2 [0.61] | 13.2 [0.27] | 0.04 | 0.05 |
2002-2006 | 12.2 [0.67] | 14.2 [0.25] | 1.94*** | 2.70 |