Table 3 Different types of effects present in mediation analysis.
ab | c′ | R2(ab) | R2(c′) |  | Numbers | ||
|---|---|---|---|---|---|---|---|
M | F | M | F | ||||
Zero | Zero | – | – |  | F > M | Other mediators | 20 |
Zero | – | – | – | F > M | F > M | Other mediators | 13 |
– | – | – | – | F > M / NS | F > M | Other mediators | 4 |
– | Zero | – | – | M > F | F > M | Cancel out | 3 |
Zero | + | – | – | F > M | F > M | Cancel out | 2 |
+ | + | – | – | NS | F > M | Other mediators / Cancel out | 2 |
