Table 9.
Blood fatty acid levels in the CSHQ epidemiology sample
| Mean | SD | Range | |
|---|---|---|---|
| DHA (22 : 6) | 1.93 | 0.54 | 0.9–3.8 |
| DPA (22 : 5) | 1.03 | 0.28 | 0.53–3.62 |
| EPA (20 : 5) | 0.56 | 0.21 | 0–2.03 |
| ALA (18 : 3) | 0.55 | 0.26 | 0–2.32 |
| Total omega-3 | 4.11 | 0.85 | 2.19–8.01 |
| DPA (n-6) (22 : 5) | 0.25 | 0.1 | 0–0.63 |
| Adrenic (22 : 4) | 1.10 | 0.22 | 0.42–1.81 |
| AA (20 : 4) | 8.18 | 1.31 | 4.3–11.73 |
| DGLA (20 : 3) | 1.55 | 0.34 | 0.81–2.9 |
| GLA (18 : 3) | 0.32 | 0.24 | 0–1.41 |
| LA (18 : 2) | 19.22 | 2.33 | 12.66–26.08 |
| Total omega-6 | 30.88 | 3.33 | 20.61–39.79 |
| Omega-3 index | 2.49 | 0.67 | 1.26–5.24 |
| Ratio DHA : AA | 0.24 | 0.06 | 0.14–0.53 |
| Ratio EPA : AA | 0.07 | 0.03 | 0–0.24 |
n = 395
CSHQ, Child Sleep Habits Questionnaire; SD, standard deviation; ALA, α-linolenic acid; EPA, eicosapentaenoic acid; DPA, docosapentaenoic acid (both omega-3 and omega-6); DHA, docosahexaenoic acid; LA, linoleic acid; GLA, gamma-linolenic acid; DGLA, dihomo-gamma-linolenic acid; AA, arachidonic acid.