Associations of lung cancer with lung disease diagnosed at least one year prior and lung cancer in the Environment And Genetics in Lung cancer Etiology case-control study, stratified by smoking status.

*OR = odds ratio, CI = confidence interval. Adjusted for study age, sex, region, bronchitis (unless main effect or COPD), emphysema (unless main effect or COPD) and pneumonia for never smokers and also pack-years and amount of cigarette smoking (average packs/day) for smokers.
†COPD = chronic obstructive pulmonary disease (chronic bronchitis and/or emphysema).
‡LRT = likelihood ratio test.
∥OR = 0.76 (95% CI = 0.26–2.2) in female never smokers and 1.7 (95% CI = 0.59–5.1) in female ever smokers, LRT p-value  = 0.2.

* OR为比值比（odds ratio），CI为置信区间（confidence interval）。本分析校正了研究对象的年龄、性别、地区、支气管炎（除非其为主要效应指标或属于慢性阻塞性肺疾病（COPD）范畴）、肺气肿（除非其为主要效应指标或属于COPD范畴），以及从不吸烟者的肺炎患病史；对于吸烟者，还额外校正了吸烟包年数与日均吸烟量（平均每日吸烟包数）。
† COPD即慢性阻塞性肺疾病（chronic obstructive pulmonary disease），包含慢性支气管炎和/或肺气肿。
‡ LRT即似然比检验（likelihood ratio test）。
∥ 女性从不吸烟者的OR值为0.76（95%CI=0.26~2.2），女性曾吸烟者的OR值为1.7（95%CI=0.59~5.1），似然比检验的P值为0.2。