Comparison of Face-to-Face Interview Questionnaires and Medical Records Data for Smoking Habits in Lung Cancer Patients

Eui-Cheol Lee; Jeong-Seon Ryu; Hyun-Jung Kim; Jae-Hwa Cho; Seoung-Min Kwak; Hong-Lyeol Lee

doi:10.4046/trd.2007.62.1.27

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Lee, Ryu, Kim, Cho, Kwak, and Lee: Comparison of Face-to-Face Interview Questionnaires and Medical Records Data for Smoking Habits in Lung Cancer Patients

Original Article

Tuberculosis and Respiratory Diseases

Tuberculosis and Respiratory Diseases 2007; 62(1): 27-32.

Published online: 31 January 2007

DOI: https://doi.org/10.4046/trd.2007.62.1.27

Comparison of Face-to-Face Interview Questionnaires and Medical Records Data for Smoking Habits in Lung Cancer Patients

Eui-Cheol Lee¹, Jeong-Seon Ryu, M.D.², Hyun-Jung Kim, M.D.², Jae-Hwa Cho, M.D.², Seoung-Min Kwak, M.D.², Hong-Lyeol Lee, M.D.²

¹Department of Occupational and Environmental Medicine, College of Medicine, Inha University, Incheon, South Korea.

²Department of Internal Medicine, College of Medicine, Inha University, Incheon, South Korea.

Address for correspondence: Jeong-Seon Ryu, M.D. Associate Professor, Pulmonary Division, Dept. of Internal Medicine, Inha University Hospital 7-206, 3-Ga, Shinheung Dong, Jung Gu, Inchon, 400-103, Korea. Phone: 82-32-890-3738, Fax: 82-32-882-6578, jsryu@inha.ac.kr

Received 29 November 2006 Accepted 26 December 2006

Abstract

Background

This study evaluated the accuracy of smoking habit from the data obtained from the medical records of lung cancer patients against the data obtained form face-to-face interview questionnaires

Methods

The smoking habits of 225 lung cancer patients were categorized into never smoked, ex-smoker and current smoker in face-to-face interview questionnaire and medical record taken at the time of admission for a diagnosis. The overall agreement between two sources was evaluated. The factors affecting the disagreement between two sources and the level of data omission of the smoking habits in medical records were analyzed suing multiple logistic regression.

Results

The smoking habit between two sources showed moderate overall agreement(Kappa (κ)=0.60). The lowest agreement was observed in the ex-smokers(κ=0.49). Multivariate analysis revealed an age of 65 or older to be a statistically significant factor associated with the increasing disagreement risk compared with those 64 or younger (OR 3.02; 95% CI 1.58-5.80). The omission rate of smoking habits in the medical records was 18.2%. Adenocarcinoma was shown to be a statistically significant factor of associated with an increasing omission rate compared with squamous cell carcinoma (OR 3.00; 95% CI 1.19-7.59).

Conclusion

The smoking habits obtained from medical record moderately reflect their true behavior. However, the smoking habit data from medical record should be used with caution when being used in a clinical study or cohort study of lung cancer.

Keywords: Medical record, Questionnaire, Smoking, Lung cancer

Figures and Tables

Table 1

Clinical characteristics of patients

^*include NSCLC of which cell type is not specified

Table 2

Overall Smoking Status of Study Population: Comparison of Result from Face-to-Face Interview Questionnaire with Medical Record

Table 3

Inter-rate agreement for smoking habit between face-to-face interview questionnaire and medical record

Table 4

Adjusted prevalence odds ratio (por) for missing data of smoking habit from medical record

^*adjusted for sex, age, stage, ECOG PS, cell type

^†include large cell lung carcinoma and NSCLC of which cell type is not specified

Table 5

Adjusted prevalence odds ratio (por) for disagreement of smoking habit

^*adjusted for sex, age, stage, ECOG PS, cell type

^†include large cell lung carcinoma and NSCLC of which cell type is not specified

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