Table 1.

Test-retest reliability of Fagerstrom test for nicotine dependence in various included studies

Authors	Study title	Year	Country	Target population/n	Application setting	Interval	Reliability
Huang et al.[7]	The psychometric properties of the Chinese version of the FTND	2006	China	245 smokers with an age range from 18 to 88 years	Survey	Correlated with biomarkers	0.74
Buckley et al.[8]	A psychometric evaluation of the FTND in PTSD smokers	2005	USA	513 adult smokers with PTSD	Clinical	Test-retest intervals of 1 week	0.82
Hudmon et al.[9]	Validity of retrospective assessments of nicotine dependence: A preliminary report	2005	France	306 Pregnant smoker Older than 18 years	Randomized, double-blind, placebo-controlled, parallel-group Multicenter Study	Intervals of 5-12 years	FTND=0.72 FTQ=0.62
Vink et al.[10]	FTND in a dutch sample of daily smokers and ex-smokers	2005	Holland	1378 daily smokers and 1058 ex-smokers	Survey method	1.8 years	FTND Male smokers=0.70 Female smokers=0.83 Male ex-smokers=0.91 Female ex-smokers=0.83
Weinberger et al.[11]	Reliability of the FTND, minnesota nicotine withdrawal scale, and tiffany questionnaire for smoking urges in smokers with and without schizophrenia	2007	USA	n=181 cigarette smokers and n=151 smokers with Schizophrenia	Clinical	7 days	Smokers with schizophrenia FTND=0.65 MNWS=0.58 T-QSU F1=0.65 T-QSU F2=0.69 Smokers without psychotic symptoms FTND=0.82 MNWS=0.64 T-QSU F1=0.79 T-QSU F 2=0.81
Uysal et al.[12]	FTND: Reliability in a Turkish sample and factor analysis	2004	Turkey	169 smokers	Clinical	10-14 days apart	FTND=0.56
de Meneses-Gaya et al.[13]	Psychometric qualities of the Brazilian versions of the FTND and the heaviness of smoking index	2009	Brazil	61 students Age range from 18 to 70 years	Survey	15 days	FTND=0.92
Jayakrishnan et al.[14]	Assessment of nicotine dependence among smokers in a selected rural population in Kerala, India	2012	India	928 smokers 18-60 years	Survey	2 months	FTND=0.77
Stavem et al.[15]	Properties of the CDS and the Fagerström test of nicotine dependence in a representative sample of smokers in Norway	2008	Norway	1265 participants 290 were daily smokers	Cross-sectional telephone survey	12 months	FTND=0.90 CDS-12=0.97
Courvoisier and Etter[16]	Comparing the predictive validity of five cigarette dependence questionnaires	2010	Switzerland	2206 daily smokers and 137 occasional (nondaily) smokers	Survey method	Survey 2-8 days Survey 3-31 days	FTND=0.70 CDS-5=0.87 NDSS-T=0.87
Breteler et al.[17]	Compulsive smoking: The development of a rasch homogeneous scale of nicotine dependence	2004	Holland	1525 smokers Aged 15 years and older	National survey	-	FTND=0.66

PTSD – Posttraumatic stress disorder; FTND – Fagerstrom test for nicotine dependence; FTQ – Fagerstrom Tolerance Questionnaire; MNWS – Minnesota Nicotine Withdrawal Scale; T- QSU – Tiffany questionnaire for smoking urges; CDS – Cigarette Dependence Scale; NDSS – Nicotine Dependence Syndrome Scale