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Journal of the Korean Academy of Family Medicine 2002;23(8):999-1008.
Published online August 10, 2002.
The Reliability and Validity of Korean Version of Questionnaire for Nicotine Dependence.
Hee Kyoung Ahn, Hwa Jin Lee, Do Sik Jung, Seon Yeong Lee, Seong Won Kim, Jae Heon Kang
Department of Family Medicine, Sanggye Paik Hospital, College of Medicine, Inje University, Korea. seoncla@chollian.net
한국어판 니코틴 의존도 설문 도구(FagerstromTolerance Questionnaire, FTQ and Fagerstrom Test for Nicotine Dependence, FTND)의 신뢰도 및 타당도
안희경,이화진,정도식,이선영,김성원,강재헌
인제대학교 상계백병원 가정의학과
Abstract
Background
: Although the Fagerstrom Tolerance Questionnaire (FTQ) and the Fagerstrom Test for Nicotine Dependence (FTND), which are the tools to measure Nicotine Dependence, have a high internal reliability and a high test-retest reliability, they have not been tested domestically. A Korean-Version Questionnaire for Nicotine Dependence was assessed to find out the internal reliability, test-retest reliability and validity.

Methods : The research subjects were adult smokers of ages between 19 and 77 among hospital visitors, hospital staffs, inpatients and outpatients. The smokers had their carbon monoxide measured after responding to the questionnaire. The questionnaire consisted of Nicotine Dependence (FTQ & FTND), the history of smoking, the variables related to Nicotine Dependence, and factors that influence carbon monoxide(CO) measurement. Micro II smokerlyzer (Bedfont Instruments Ltd, England) was used to analyze CO concentration in expired air. The method used for measuring CO concentration was to deeply inhale and hold one's breath for 15 seconds and measure CO concentration while exhaling.

Results : The total number of subjects was 205 (199 males, 6 females) consisting of 124 hospital visitors, 67 hospital staff, 8 inpatients, and 6 inpatients. The average FTQ was 4.68 and the average FTND was 3.95. Cronbach's alpha, which indicates the internal reliability, was 0.6679 for FTQ and 0.6913 for FTND. The correlation coefficient which indicates test-retest reliability was 0.783 for FTQ and 0.880 for FTND. The correlation coefficient which indicates the relationship between the level of Nicotine Dependence and expired air CO concentration was 0.484 for FTQ and 0.563 for FTND. The correlation coefficient of the smoking period was 0.247 for FTQ and 0.252 for FTND.

Conclusion : This Korean-Version Questionnaires for Nicotine Dependence (FTQ & FTND) were both satisfactory from the aspects of reliability and validity. It was concluded that the Korean-Version of FTND was a reliable method to reflect the level of nicotine dependence of smokers from the fact that the reliability and validity of FTND was higher than that of FTQ.
Key Words: nicotine dependence, fagerstrom tolerance questionnaire, fagerstrom test for nicotine dependence, reliability, validity
초록
연구배경 : 니코틴 의존도를 측정하는 설문 도구인 Fagerstrom Tolerance Questionnaire (FTQ)와 Fagerstrom Test for Nicotine Dependence (FTND)는 높은 내적 신뢰도와 검사-재검사 신뢰도, 타당도를 갖고 있으나, 국내에서는 이에 대한 조사가 아직 이뤄지지 않은 상태이다. 이에 한국어판 니코틴 의존도 설문 도구(FTQ, FTND)의 내적 신뢰도, 검사-재검사 신뢰도, 타당도를 알아보고자 하였다.

방법 : 연구 대상은 병원 방문객, 병원 직원, 입원환자, 외래환자 중에서 참여를 원하는 19세에서 77세의 성인 흡연자로 하였다. 연구 대상자에게 자기 기입식 설문 조사와 호기 중 일산화탄소 농도를 측정하였다. 설문은 한국어판 니코틴 의존도(FTQ와 FTND), 흡연력, 니코틴 의존과 관련된 다른 변수들, 일산화탄소 측정에 영향을 주는 요인 등의 내용으로 구성되었다. 호기 중 일산화탄소 측정은 영국 Bedfont사의 Micro II Smokerlyzer를 이용하였고, 숨을 깊게 들이마신 후 15초간 참았다가 내쉴 때의 호기 중 일산화탄소 농도를 측정하였다.

결과 : 대상자는 총 205명(남성 199명, 여성 6명)으로 병원 방문객 124명(60.5%)과 병원 직원 67명(32.7%), 입원환자 8명(3.9%), 외래환자 6명(2.9%) 등으로 구성되었다. FTQ 점수는 4.68 (±2.34), FTND 점수는 3.95 (±2.56)이었다. 내적 신뢰도를 나타내는 알파계수(Cronbach's alpha)는 FTQ가 0.6679, FTND가 0.6913이고, 검사-재검사 신뢰도를 보는 상관계수가 FTQ는 r=0.783 (P<.01), FTND는 r=0.880 (P<.01)이었다. 니코틴 의존도 점수와 호기 중 일산화탄소 농도와의 상관계수가 FTQ는 r=0.484 (P<.01), FTND는 r=0.563 (P<.01)이었고, 하루 피우는 담배량과의 상관계수가 FTQ는 r=0.676 (P<.01), FTND는 0.715 (P<.01)이었다. 담배 피운 기간과의 상관관계는 FTQ가 r=0.247 (P<.01), FTND가 0.252 (P<.01)이었다.

결론 : 한국어판 니코틴 의존도 설문 도구(FTQ와 FTND)는 신뢰도와 타당도가 만족할 만하였고 FTND가 FTQ보다는 신뢰도와 타당도가 더 높아서 한국어판 FTND는 흡연자의 니코틴 의존도를 반영함에 있어 믿을 수 있는 방법임을 알 수 있었다.
중심 단어: 니코틴 의존도, Fagerstrom tolerance questionnaire (FTQ), Fagerstrom test for nicotine dependence (FTND), 신뢰도, 타당도 nicotine dependence, fagerstrom tolerance questionnaire, fagerstrom test for nicotine dependence, reliability, validity


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