Sample selection procedure
| Selection process | Observations |
|---|---|
| Total observations produced from 1998 to 2021 | 56,478 |
| Drop: observations produced from 1998 to 2000 | (3,134) |
| 53,344 | |
| Drop: observations with missing data on Chair and CEO age (7,986), gender (3,597), tenure (N = 152), Tobin’s Q (N = 1,566), board meeting (N = 36), sales (N = 413) and R&D expenses (N = 741) | (14,491) |
| 38,853 | |
| Drop: missing industry code & SIC codes between J66-J69 (financial institutes) | (1,653) |
| Total sample (2001 to 2021) | 37,200 |
| Selection process | Observations |
|---|---|
| Total observations produced from 1998 to 2021 | 56,478 |
| Drop: observations produced from 1998 to 2000 | (3,134) |
| 53,344 | |
| Drop: observations with missing data on Chair and CEO age (7,986), gender (3,597), tenure ( | (14,491) |
| 38,853 | |
| Drop: missing industry code & SIC codes between J66-J69 (financial institutes) | (1,653) |
Source(s): Authors’ own calculation