Table 4.
Odds ratio (OR) with 95% confidence intervals (CI) of melanoma by tertile of serum fatty acids percentage composition, adjusted for phototype, education and sun exposure.
| Ia | II | III | P trend | |||
|---|---|---|---|---|---|---|
| OR | OR | (95% CI) | OR | (95% CI) | ||
| SFAsb | ||||||
| Palmitic | 1.00 | 0.79 | (0.22–2.87) | 0.71 | (0.18–2.76) | 0.440 |
| Margaric (daturic) | 1.00 | 0.49 | (0.12–1.91) | 1.66 | (0.39–7.16) | 0.646 |
| Stearic | 1.00 | 1.85 | (0.46–7.43) | 3.00 | (0.56–16.07) | 0.101 |
| Arachidic | 1.00 | 1.13 | (0.20–6.54) | 2.05 | (0.45–9.40) | 0.334 |
| Lignoceric | 1.00 | 0.24 | (0.05–1.11) | 0.38 | (0.09–1.55) | 0.552 |
| MUFAsb | ||||||
| Oleic | 1.00 | 1.98 | (0.51–7.60) | 0.82 | (0.22–3.08) | 0.977 |
| Nervonic | 1.00 | 1.82 | (0.31–10.78) | 1.26 | (0.15–10.48) | 0.305 |
| PUFAsb | ||||||
| Linoleic | 1.00 | 1.10 | (0.34–3.58) | 0.71 | (0.20–2.45) | 0.420 |
| Arachidonic | 1.00 | 0.50 | (0.14–1.86) | 1.10 | (0.33–3.71) | 0.459 |
| EPA | 1.00 | 1.65 | (0.40–6.69) | 0.64 | (0.12–3.40) | 0.785 |
| DPA | 1.00 | 0.49 | (0.13–1.85) | 0.73 | (0.20–2.67) | 0.697 |
| DHA | 1.00 | 0.42 | (0.09–2.00) | 0.44 | (0.11–1.74) | 0.581 |
| Groupings | ||||||
| SFAs | 1.00 | 0.28 | (0.04–1.73) | 1.56 | (0.37–6.61) | 0.848 |
| MUFAs + PUFAs | 1.00 | 0.62 | (0.17–2.26) | 0.52 | (0.11–2.34) | 0.686 |
| MUFAs | 1.00 | 1.33 | (0.33–5.29) | 0.71 | (0.17–2.96) | 0.876 |
| PUFAs | 1.00 | 0.95 | (0.25–3.59) | 0.98 | (0.28–3.46) | 0.850 |
| SFAs/MUFAs + PUFAs | 1.00 | 1.41 | (0.33–6.05) | 1.65 | (0.43–6.33) | 0.962 |
| SFAs/PUFAs | 1.00 | 0.88 | (0.25–3.12) | 1.31 | (0.41–4.14) | 0.692 |
| n-3 PUFAs | 1.00 | 0.70 | (0.16–3.08) | 0.95 | (0.23–3.93) | 0.531 |
| n-6 PUFAs | 1.00 | 0.64 | (0.17–2.46) | 0.97 | (0.29–3.17) | 0.775 |
| n-3 PUFAs/n-6 PUFAs | 1.00 | 1.55 | (0.46–5.27) | 1.04 | (0.25–4.37) | 0.504 |
aReferent group.
bSFAs: saturated fatty acids; MUFAs: monounsaturated fatty acids; PUFAs: polyunsaturated fatty acids.