Table 2.
Fixed-Effects Method Meta-Analytical Relationships between Mentoring and Outcomes
| N | k | rc | SDc | (95% LCI | 95% UCI) | Q | Fail-Safe N | |
|---|---|---|---|---|---|---|---|---|
| Behavioral | ||||||||
| Performance | 10250 | 31 | .08* | .12 | (.06 | .10) | 166.89* | 159 |
| Performance (without large sample) | 6925 | 30 | .10* | .14 | (.07 | .12) | 159.97* | 124 |
| Withdrawal behavior | 4423 | 18 | −.07* | .08 | (−.10 | −.04) | 38.86* | 39 |
| Withdrawal intentions | 3152 | 7 | −.10* | .03 | (−.14 | −.05) | 7.70 | 48 |
| Helping others | 5792 | 10 | .13* | .12 | (.10 | .16) | 69.98* | 45 |
| Helping others (without large sample) | 2753 | 9 | .20* | .12 | (.15 | .24) | 42.29* | 44 |
| Deviance | 3494 | 15 | −.06* | .02 | (−.10 | −.03) | 15.76* | 72 |
| Attitudinal | ||||||||
| Situational satisfaction & attachment | 16694 | 31 | .16* | .07 | (.14 | .17) | 102.76* | 1005 |
| Situational satisfaction & attachment (without large sample) | 10194 | 30 | .17* | .08 | (.15 | .19) | 95.36* | 791 |
| School attitudes | 4245 | 11 | .19* | .22 | (.16 | .23) | 185.50* | 9 |
| Career attitudes | 11540 | 16 | .14* | .15 | (.12 | .16) | 187.38* | 111 |
| Career attitudes (without large sample) | 5040 | 15 | .19* | .18 | (.16 | .22) | 159.76* | 72 |
| Health-Related | ||||||||
| Substance use | 2889 | 7 | −.08* | .02 | (−.12 | −.03) | 6.99 | 25 |
| Psychological stress & strain | 6232 | 20 | −.04* | .06 | (−.07 | −.01) | 41.85* | 0 |
| Self-perceptions | 4626 | 19 | .06* | .09 | (.03 | .09) | 53.47* | 15 |
| Interpersonal | ||||||||
| Interpersonal relations | 8416 | 22 | .12* | .09 | (.10 | .14) | 89.26* | 222 |
| Motivational | ||||||||
| Motivation/involvement | 11267 | 19 | .11* | .08 | (.09 | .13) | 63.68* | 208 |
| Motivation/involvement (without large sample) | 4767 | 18 | .14* | .10 | (.11 | .17) | 57.59* | 124 |
| Career | ||||||||
| Career recognition & success | 5833 | 18 | .05* | .15 | (.02 | .08) | 130.69* | 20 |
| Skills/competence development | 2238 | 13 | .11* | .08 | (.07 | .16) | 23.89 | 84 |
*
p<.05.
Note. N = cumulative sample size; k = number of studies cumulated; rc = sample-size weighted corrected correlation; SDc = standard deviation of rc; LCI = lower bound of confidence interval; UCI = upper bound of confidence interval; Q = Q statistic.