Table 3 ERI factors and sleep disturbances
|  | Nonsufferers A (Mean ± SD) | Sufferers B (Mean ± SD) | t | P |
|---|---|---|---|---|
Effort (scores) | 17.32 ± 3.00 | 19.84 ± 3.00 | −9.013 | 0.000 |
Reward (scores) | 29.46 ± 2.49 | 29.89 ± 2.84 | −1.741 | 0.082 |
Overcommitment (scores) | 15.88 ± 2.06 | 17.86 ± 2.07 | −10.292 | 0.000 |
ERI ratio | 1.08 ± 0.20 | 1.22 ± 0.21 | −7.496 | 0.000 |