Comparison of the lung cancer patient population predicted by our model (1988 to 1999) with data from the SEER database (from 1988 to 1999 and from 2004 to 2008).

*TNM staging being unavailable in SEER before 2004, we categorized tumors as localized, regional, and distant, for patients between 1988 and 1999.**Smoking status is not reported in SEER.£Excluding missing stage.

* 鉴于2004年之前的SEER数据库中无法获取TNM分期（TNM staging）相关信息，我们将1988年至1999年的患者肿瘤划分为局限性、区域性及远处转移性三类。** SEER数据库未报告吸烟状态信息。£ 排除分期信息缺失的病例。