| variable | N | mean | p50 | min | max |
| fee | 1092 | 11.69 | 11.65 | 10.83 | 13.69 |
| treat | 1092 | 0.50 | 0.50 | 0 | 1 |
| after | 1092 | 0.50 | 0.50 | 0 | 1 |
| T | 1092 | 0.25 | 0 | 0 | 1 |
| size | 1092 | 22.21 | 21.92 | 19.55 | 25.66 |
| lev | 1092 | 0.48 | 0.48 | 0.05 | 0.93 |
| roa | 1092 | 0.03 | 0.03 | −0.13 | 0.20 |
| current | 1092 | 1.98 | 1.13 | 0.35 | 21.97 |
| quick | 1092 | 1.50 | 0.72 | 0.08 | 20.71 |
| arinv | 1092 | 0.20 | 0.19 | 0.01 | 0.70 |
| ngs | 1092 | 6.22 | 5 | 3 | 25 |
| nbs | 1092 | 2.87 | 2 | 1 | 12 |
| top10 | 1092 | 0.47 | 0 | 0 | 1 |
| GDP | 1092 | 11.16 | 11.29 | 9.89 | 11.83 |
| ic | 1092 | 6.45 | 6.52 | 0 | 6.87 |