RESUMO
Objective To understand the prevalence of family cancer history among lung cancer patients. Methods The family cancer history of 418 patients with lung cancer was investigated by a face-to-face survey in Bazhong area according to the " Questionnaire on Family History and Medical History of Population Diseases". Results The positive rates of family history of cancer and lung cancer in the 418 patients with lung cancer were 36.12% (151/418) and 28.47% (119/418), respectively. There was no statistical difference in the positive rates between the two (P>0.05). Among the patients' family members, the number of cancer-positive people was mainly 3 or less. The higher the number, the lower the probability (P<0.05). The positive rates of family history of cancer and lung cancer in first-degree relatives were significantly higher than those of second-degree and third-degree relatives (P<0.05). Conclusion Targeted health education for cancer patients and their families, especially health education for first-degree relatives, may help improve the early diagnosis of lung cancer patients.