Table 6.
Predicted means and 95% confidence intervals of the Perceived Stress Scale (PSS) for the treatment groups over time.
| Control | Placebo | Fish oil | |
| Time 1 | |||
| Mean | 15.836 | 23.929 | 23.938 |
| 95% CI sep | 1.203 | 2.555 | 2.390 |
| 95% CI joint | 1.716 | 3.645 | 3.409 |
| Time 2 | |||
| Mean | 15.337 | 20.643* | 17.379* |
| 95% CI sep | 1.416 | 2.725 | 2.455 |
| 95% CI joint | 2.021 | 3.888 | 3.502 |
Note: 95% CI sep = 95% confidence interval considering each item separately, 95% CI joint = 95% confidence interval, considering the estimates of the three treatment groups collectively. *denotes significant difference from baseline (p < 0.05).