TABLE 1.
Descriptive statistics of all variables from the treatment group (online training) and the comparison group (face-to-face training)
| Categorical variables | Online | Face-to-face | All | |||
|---|---|---|---|---|---|---|
| N | % | N | % | N | % | |
| Race/ethnicitya | ||||||
| Well represented | 9 | 5.9 | 430 | 65.6 | 439 | 54.4 |
| Historically excluded | 139 | 91.4 | 150 | 22.9 | 289 | 35.8 |
| Prefer not to answer | 4 | 2.6 | 75 | 11.5 | 79 | 9.8 |
| Sex | ||||||
| Female | 82 | 53.9 | 326 | 49.8 | 408 | 50.6 |
| Male | 62 | 40.8 | 253 | 38.6 | 315 | 39.0 |
| Other | 3 | 2.0 | 2 | 0.3 | 5 | 0.6 |
| Prefer not to answer | 2 | 1.3 | 12 | 1.8 | 14 | 1.7 |
| Title | ||||||
| Faculty member | 59 | 38.8 | 217 | 33.1 | 276 | 34.2 |
| Graduate student | 50 | 32.9 | 223 | 34.0 | 273 | 33.8 |
| Postdoc | 22 | 14.5 | 83 | 12.7 | 105 | 13.0 |
| Researcher or scientist | 12 | 7.9 | 63 | 9.6 | 75 | 9.3 |
| Other | 8 | 5.3 | 56 | 8.5 | 64 | 7.9 |
| Mentor’s previous mentoring experience | ||||||
| Yes | 29 | 19.1 | 76 | 11.6 | 105 | 13.0 |
| No | 109 | 71.7 | 322 | 49.2 | 431 | 53.4 |
| Facilitator effectiveness | ||||||
| Very effective | 80 | 52.6 | 282 | 43.1 | 362 | 44.9 |
| Effective | 52 | 34.2 | 163 | 24.9 | 215 | 26.6 |
| Neither | 6 | 3.9 | 16 | 2.4 | 22 | 2.7 |
| Ineffective | – | – | 6 | 0.9 | 6 | 0.7 |
| Very ineffective | – | – | 3 | 0.5 | 3 | 0.4 |
| Mentee’s career stage | ||||||
| Faculty | 13 | 8.6 | 213 | 32.5 | 226 | 28.0 |
| Graduate student | 57 | 37.5 | 257 | 39.2 | 314 | 38.9 |
| Undergraduate student | 134 | 88.2 | 233 | 35.6 | 367 | 45.5 |
| None | 1 | 0.7 | 29 | 4.4 | 30 | 3.7 |
| Continuous variables | Online | Face-to-face | All | ||||||
|---|---|---|---|---|---|---|---|---|---|
| N | Mean | SD | N | Mean | SD | N | Mean | SD | |
| Covariates | |||||||||
| Dosage | 152 | 7.36 | 0.94 | 655 | 8.58 | 1.34 | 807 | 8.35 | 1.36 |
| Mentor’s years of experience | 138 | 7.19 | 7.59 | 409 | 7.47 | 8.61 | 547 | 7.40 | 8.36 |
| Outcome measures | |||||||||
| Mentoring skill gains | 130 | 1.01 | 0.59 | 545 | 0.87 | 0.71 | 675 | 675 | 0.89 |
| Overall quality gains | 128 | 1.14 | 0.68 | 404 | 1.17 | 0.87 | 532 | 532 | 1.16 |
| Meeting expectation gains | 129 | 0.91 | 0.80 | 357 | 0.93 | 0.90 | 486 | 486 | 0.92 |
| Intended changes | 138 | 1.07 | 0.25 | 418 | 1.06 | 0.23 | 556 | 556 | 1.06 |
aThe race/ethnicity variable was computed using the original racial and ethnic categories. Well-represented racial/ethnic group includes participants who reported as White or Asian, and not Hispanic. Historically excluded racial/ethnic group contains mentors who reported as any of the following racial and ethnic categories: 1) American Indian or Alaska Native, 2) Black or African American, 3) Native Hawaiian or Other Pacific Islander, 4) other, and 5) any Hispanic or Latino group.