Table 1.
Association of trial accrual sufficiency status with respondent academic rank, prior clinical trial experience, and continuity of trial involvement for study chairs and lead statisticians
| Respondent characteristic at trial opening | Overall, % | By trial accrual sufficiency status, % | ||||
|---|---|---|---|---|---|---|
| Study Chair | Lead Statistician | |||||
| Study Chair (n=110) | Lead Statistician (n=199) | Sufficient(n=75) | Insufficient (n=35) | Sufficient (n=126) | Insufficient (n=73) | |
| Academic Rank | ||||||
| Asst. Prof. | 31 | 23 | 33 | 26 | 24 | 21 |
| Assoc. Prof. | 35 | 16 | 36 | 34 | 18 | 14 |
| Prof. | 27 | 20 | 25 | 31 | 19 | 20 |
| Other | 7 | 33 | 6 | 9 | 33 | 33 |
| Missing | - | 8 | 6 | 12 | ||
| No. of prior trials served as study chair / lead statistician in cooperative group setting | ||||||
| 0 | 34 | 11 | 39 | 26 | 14 | 7 |
| 1 | 21 | 1 | 19 | 26 | 0 | 3 |
| 2-10 | 29 | 26 | 28 | 31 | 27 | 23 |
| 11-20 | 4 | 17 | 4 | 3 | 18 | 17 |
| ≥ 21 | 9 | 34 | 9 | 8 | 33 | 34 |
| Missing | 3 | 11 | 1 | 6 | 8 | 16 |
| Involved with trial from design to closure | ||||||
| Yes | 80* | 55 | 76 | 89 | 55 | 55 |
*
NSABP substituted protocol officers for study chair respondents. Protocol officers frequently answered this question as “No” since they technically were not the study chair but they were involved throughout the course of the trial.