Table 3. Blood fatty acid levels by fish consumption.
| Fish consumption | |||||||
| Not at all | Less than once a week | Once a week | More than once a week | ?2 (P-value)† | |||
| (n = 44) | (n = 158) | (n = 232) | (n = 56) | ||||
| Omega-3 fatty acids: | |||||||
| ALA (18∶3, n–3) | 0.50 | 0.53 | 0.53 | 0.66 | 8.004 (0.046) | ||
| SDA (20∶3, n–3) | 0.06 | 0.05 | 0.04 | 0.05 | 2.562 (0.464) | ||
| EPA (20∶5, n–3) | 0.51 | 0.54 | 0.56 | 0.64 | 6.090 (0.107) | ||
| DPA (22∶5, n–3) | 1.00 | 1.03 | 1.05 | 0.95 | 7.138 (0.068) | ||
| DHA (22∶6, n–3) | 1.64 | 1.76 | 2.00 | 2.09 | 38.593 (0.000) | ||
| EPA+DHA (“Omega-3 Index”) | 2.15 | 2.30 | 2.56 | 2.73 | 33.003 (0.000) | ||
| Total Omega-3 | 3.70 | 3.91 | 4.18 | 4.39 | 23.854 (0.000) | ||
| Omega-6 fatty acids: | |||||||
| LA (18∶2, n–6) | 18.36 | 19.21 | 19.30 | 19.32 | 5.277 (0.153) | ||
| GLA (18∶3, n–6) | 0.30 | 0.34 | 0.31 | 0.26 | 1.964 (0.580) | ||
| DGLA (20∶3, n–6) | 1.58 | 1.58 | 1.56 | 1.45 | 8.873 (0.031) | ||
| AA (20∶4, n–6) | 8.32 | 8.13 | 8.27 | 7.71 | 7.882 (0.049) | ||
| Adrenic (22∶4, n–6) | 1.19 | 1.13 | 1.10 | 1.01 | 15.578 (0.001) | ||
| DPA (22∶5, n–6) | 0.26 | 0.26 | 0.26 | 0.24 | 3.755 (0.289) | ||
| Total Omega-6 | 30.28 | 30.90 | 31.04 | 30.30 | 3.488 (0.322) | ||
†
Kruskal-Wallis Test of simultaneous independence of all categories of fish consumption.