Table 5.
Means of erythrocyte fatty acids over the 12-week intervention, Chronic Daily Headache study, May 2010
| Baseline (n = 20) | Week 4 (n = 20) | Week 8 (n = 20) | Week 12 (n = 18) | |||||
|---|---|---|---|---|---|---|---|---|
| Variable | Mean | 95% CI | Mean | 95% CI | Mean | 95% CI | Mean | 95% CI |
| Omega-3 index | 4.4 | 3.9, 5.0 | 6.2 | 5.4, 7.1 | 7.0 | 5.9, 8.1 | 7.8 | 6.5, 9.0 |
| % n-6 in HUFA* | 76.3 | 74.5, 78.0 | 70.4 | 67.5, 73.2 | 67.4 | 63.7, 71.0 | 64.7 | 60.3, 69.0 |
| DHA | 4.0 | 3.5, 4.5 | 5.2 | 4.5, 5.8 | 5.7 | 4.9, 6.5 | 6.3 | 5.4, 7.3 |
| EPA | 0.46 | 0.39, 0.54 | 1.1 | 0.8, 1.3 | 1.3 | 0.95, 1.6 | 1.4 | 1.0, 1.8 |
| AA | 14.8 | 14.5, 15.2 | 14.4 | 13.7, 15.1 | 13.8 | 13.2, 14.5 | 13.7 | 12.9, 14.5 |
| LA | 11.5 | 10.8, 12.1 | 9.5 | 8.8, 10.2 | 9.3 | 8.6, 10.0 | 9.5 | 8.8, 10.3 |
* %n-6 in HUFA is the percentage of omega-6 fatty acid in total HUFA as calculated by: 100 × (20:3n-6 + 20:4n-6 + 22:4n-6 + 22:5n-6)/(20:5n-3 + 22:5n-3 + 22:6n-3 + 20:3n-6 + 20:4n-6 + 22:4n-6 + 22:5n-6 + 20:3n-9).
Abbreviations: HUFA, highly-unsaturated fatty acid; DHA, Docosahexaenoic acid; EPA, eicosapentaenoic acid; AA, arachidonic acid; LA, linoleic acid.