Associations between fat mass (%) and risk of hip fracture according to smoking status in elderly women and men (n = 2091) in the Hordaland Health Study.

Cox proportional hazards regression models showing hazard ratio between fat mass and hip fracture within each smoking category, and differences in HRs between each smoking category compared to never smokers.Abbreviations: HR, hazard ratio; CI, confidence interval.aNever smoking, plasma cotinine levels本研究采用考克斯比例风险回归模型（Cox proportional hazards regression models），分析各吸烟类别中脂肪量与髋部骨折之间的风险比，以及各吸烟类别与从不吸烟者相比的风险比差异。缩写说明：HR为风险比（hazard ratio）；CI为置信区间（confidence interval）。注a：从不吸烟者，血浆可替宁水平。