| Variable | Treated | Control | %bias | t | p > t | 
| State | 0.689 | 0.724 | −7.5 | −1.19 | 0.23 | 
| Size | 24.950 | 24.999 | −3.4 | −0.54 | 0.59 | 
| Roe | 0.093 | 0.088 | 9.1 | 1.41 | 0.16 | 
| Lev | 0.650 | 0.651 | −1.2 | −0.19 | 0.85 | 
| Big4 | 0.303 | 0.290 | 2.7 | 0.42 | 0.68 | 
| Amount | 2.333 | 2.362 | −3.7 | −0.58 | 0.56 | 
| ATT | −0.141 (t = −3.04) | ||||