Odds ratios of melanoma associated with European ethnicity.

aTotals may vary because of missing values.bAdjusted for age, sex and educational level by unconditional logistic regression analysis. Statistical significance: likelihood ratio test.cAdjusted for age, sex, level of education, eye color, hair color, freckle density, and skin phototype by unconditional logistic regression analysis. Statistical significance: likelihood ratio test.dSpain, France, Italy, Portugal, Germany, Austria, Hungary, Yugoslavia, Lithuania, Poland, Romania, Russia, Switzerland, or Czechoslovakia.eSpain, France, Italy, or Portugal.fGermany, Austria, Hungary, Yugoslavia, Lithuania, Poland, Romania, Russia, Switzerland, or Czechoslovakia.gAdjusted further for the number of European grandparents.

a. 总统计值可能因缺失值而存在差异。
b. 通过无条件logistic回归（unconditional logistic regression）分析对年龄、性别及受教育水平进行校正，统计学显著性检验采用似然比检验（likelihood ratio test）。
c. 通过无条件logistic回归（unconditional logistic regression）分析对年龄、性别、受教育水平、眼睛颜色、头发颜色、雀斑密度及皮肤光类型（skin phototype）进行校正，统计学显著性检验采用似然比检验（likelihood ratio test）。
d. 涵盖西班牙、法国、意大利、葡萄牙、德国、奥地利、匈牙利、南斯拉夫、立陶宛、波兰、罗马尼亚、俄罗斯、瑞士或捷克斯洛伐克。
e. 涵盖西班牙、法国、意大利或葡萄牙。
f. 涵盖德国、奥地利、匈牙利、南斯拉夫、立陶宛、波兰、罗马尼亚、俄罗斯、瑞士或捷克斯洛伐克。
g. 进一步针对欧洲祖父母的数量进行校正。