Table 3.
Radom-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 | .11* | .12 | (.05 | .17) | 50.02 | 159 |
| Performance (without large sample) | 6925 | 30 | .11* | .14 | (.05 | .18) | 41.63 | 124 |
| Withdrawal behavior | 4423 | 18 | −.07* | .08 | (−.13 | −.02) | 20.88 | 39 |
| Withdrawal intentions | 3152 | 7 | −.10* | .03 | (−.15 | −.05) | 5.67 | 48 |
| Helping others | 5792 | 10 | .17* | .12 | (.07 | .26) | 6.64 | 45 |
| Helping others (without large sample) | 2753 | 9 | .18* | .12 | (.08 | .29) | 6.07 | 44 |
| Deviance | 3494 | 15 | −.07* | .02 | (−.11 | −.03) | 14.66 | 72 |
| Attitudinal | ||||||||
| Situational satisfaction & attachment | 16694 | .17 | .07* | (.14 | .21) | 38.58 | .17 | 1005 |
| Situational satisfaction & attachment (without large sample) | 10194 | .18 | .08* | (.14 | .22) | 32.72 | .18 | 791 |
| School attitudes | 4245 | 11 | .16* | .22 | (.00 | .31) | 11.27 | 9 |
| Career attitudes | 11540 | 16 | .19* | .15 | (.10 | .28) | 23.34 | 111 |
| Career attitudes (without large sample) | 5040 | 15 | .20* | .18 | (.09 | .31) | 16.62 | 72 |
| Health-Related | ||||||||
| Substance use | 2889 | 7 | −.08* | .02 | (−.13 | −.03) | 5.86 | 25 |
| Psychological stress & strain | 6232 | 20 | −.03* | .06 | (−.07 | .02) | 19.96 | 0 |
| Self-perceptions | 4626 | 19 | .06* | .09 | (−.00 | .12) | 17.71 | 15 |
| Interpersonal | ||||||||
| Interpersonal relations | 8416 | 22 | .14 | .09 | (.09 | .19) | 18.12 | 222 |
| Motivational | ||||||||
| Motivation/involvement | 11267 | 19 | .14 | .08 | (.09 | .19) | 22.64 | 208 |
| Motivation/involvement (without large sample) | 4767 | 18 | .15 | .10 | (.08 | .21) | 17.54 | 124 |
| Career | ||||||||
| Career recognition & success | 5833 | 18 | .09 | .15 | (.01 | .18) | 11.61 | 20 |
| Skills/competence development | 2238 | 13 | .13 | .08 | (.06 | .20) | 13.25 | 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.