Validity and reliability of a Severity of Dependence Scale for khat (SDS-khat)

Journal of Ethnopharmacology

Volumn 132, Issue 3, 2010, Pages 570-577

  Kassim, Saba ^a   Islam, Sharif ^a   Croucher, Ray ^a  

^a QUEEN MARY UNIVERSITY OF LONDON   (United Kingdom)

Author keywords

Construct and concurrent validity; Dependence; Khat; Test retest reliability; Yemeni

Indexed keywords

CATHA EDULIS EXTRACT;

ADULT; AGED; ARTICLE; CONSTRUCT VALIDITY; DRUG DEPENDENCE; HUMAN; MAJOR CLINICAL STUDY; MALE; RATING SCALE; SEVERITY OF DEPENDENCE SCALE; STRUCTURED INTERVIEW; TEST RETEST RELIABILITY;

ADOLESCENT; ADULT; AGED; AGED, 80 AND OVER; BEHAVIOR, ADDICTIVE; CATHA; GREAT BRITAIN; HUMANS; INTERVIEWS AS TOPIC; MALE; MIDDLE AGED; MOTIVATION; PREVALENCE; PSYCHOTROPIC DRUGS; REPRODUCIBILITY OF RESULTS; SELF REPORT; SEVERITY OF ILLNESS INDEX; SUBSTANCE-RELATED DISORDERS; YEMEN; YOUNG ADULT;

CATHA EDULIS;

EID: 78649681024     PISSN: 03788741     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jep.2010.09.009     Document Type: Article

References (94)

1. ACMD, 2005. Khat (Qat): assessment of risk to individual and communities in the UK. In: Advisory Council on the Misuse of Drugs (ACMD) (Eds.). British Home Office, London.
2. Aden A., Dimba E.A., Ndolo U.M., Chindia M.L. Socio-economic effects of khat chewing in north eastern Kenya. East African Medical Journal 2006, 83:69-73.
3. Alem A., Kebede D., Kullgren G. The prevalence and socio-demographic correlates of khat chewing in Butajira, Ethiopia. Acta Psychiatrica Scandinavica. Supplementum 1999, 397:84-91.
4. Altman D.G. Practical Statistics for Medical Research 1999, Chapman and Hall.
5. Al-Habori M. The potential adverse effects of habitual use of Catha edulis (khat). Expert Opinion on Drug Safety 2005, 4:1145-1154.
6. Ali A. Comment on Oral white lesions associated with chewing khat. Tobacco Induced Diseases 2005, 3:5-6.
7. Ali A.A. Qat habit in Yemen society: a causative factor for oral periodontal diseases. International Journal of Environmental Research on Public Health 2007, 4:243-247.
8. Ali A.A., Al-Sharabi A.K., Aguirre J.M. Histopathological changes in oral mucosa due to takhzeen al-qat: a study of 70 biopsies. Journal of Oral Pathology & Medicine 2006, 35:81-85.
9. Ali A.A., Al-Sharabi A.K., Aguirre J.M., Nahas R. A study of 342 oral keratotic white lesions induced by qat chewing among 2500 Yemeni. Journal of Oral Pathology & Medicine 2004, 33:368-372.
10. Al-Motarreb A., Baker K., Broadley K.J. Khat: pharmacological and medical aspects and its social use in Yemen. Phytotherapy Research 2002, 16:403-413.
11. Al-Motarreb A., Briancon S., Al-Jaber N., Al-Adhi B., Al-Jailani F., Salek M.S., Broadley K.J. Khat chewing is a risk factor for acute myocardial infarction: a case-control study. British Journal of Clinical Pharmacology 2005, 59:574-581.
12. American Psychiatric Association, 1994. Diagnostic and Statistical Manual of Mental Disorder: DSM-IV, fourth ed. Washington, DC.
13. American Psychiatric Association, 2000. Diagnostic and Statistical Manual of Mental Disorders: DSM-IV-TR, fourth ed., text revision ed. Washington, DC.
14. Anderson D., Beckerleg S., Haillu D., Klein A. The Khat Controversy: Stimulating the Debate on Drugs 2007, Oxford, Berg.
15. Babor T.F., Brown J., DelBoca F.K. Validity of self reports in applied research on addictive behaviors: fact or fiction?. Behavioral Assessment 1990, 12:5-31.
16. Bartlett M.S. A note on the multiplying factors for various Chi-square approximations. Journal of the Royal Statistical Society 1954, 16:296-298.
17. Bentur Y., Bloom-Krasik A., Raikhlin-Eisenkraft B. Illicit cathinone (" Hagigat") poisoning. Clinical Toxicology (Philadelphia) 2008, 46:206-210.
18. Bhui K., Abdi A., Abdi M., Pereira S., Dualeh M., Robertson D., Sathyamoorthy G., Ismail H. Traumatic events, migration characteristics and psychiatric symptoms among Somali refugees - preliminary communication. Social Psychiatry and Psychiatric Epidemiology 2003, 38:35-43.
19. Bowling A. Measuring Health: A Review of Quality of Life Measurement Scales 1991, Open University Press, Milton Keynes.
20. Bowling A. Research Methods in Health: Investigating Health and Health Services 2009, Open University Press, Maidenhead.
21. Catell R.B. The scree test for number of factors. Multivariate Behavioral Research 1966, 1:245-276.
22. Churchill A.C., Burgess P.M., Pead J., Gill T. Measurement of the severity of amphetamine dependence. Addiction 1993, 88:1335-1340.
23. Croucher R.E., Islam S.S., Pau A.K. Concurrent tobacco use in a random sample of UK-resident Bangladeshi men. Journal of Public Health Dentistry 2007, 67:83-88.
24. DeVellis R.F. Scale Development: Theory and Applications 2003, Sage, Thousand Oaks, Calif., London.
25. Dhaifalah I., Santavy J. Khat habit and its health effect. A natural amphetamine. Biomedical Papers of the Medical Faculty of the University Palacky, Olomouc, Czechoslovakia 2004, 148:11-15.
26. Drummond C. Dependence on psychoactive drugs: findings a common language. The International Handbook of Addiction Behavior 1991, Tavistock/Routledge, London, (Chapter 1). I.B. Glass (Ed.).
27. Eddy N.B., Halbach H., Isbell H., Seevers M.H. Drug dependence: its significance and characteristics. Bulletin of the World Health Organization 1965, 32:721-733.
28. Edwards G., Gross M.M. Alcohol dependence: provisional description of a clinical syndrome. British Medical Journal 1976, 1:1058-1061.
29. Edwards G., Arif A., Hodgson R. Nomenclature and classification of drug- and alcohol-related problems: a WHO Memorandum. Bulletin of the World Health Organization 1981, 59:225-242.
30. Fagerstrom K.O. Measuring degree of physical dependence to tobacco smoking with reference to individualization of treatment. Addictive Behaviors 1978, 3:235-241.
31. Food and Agriculture Organization of the United Nations, 2008. Qat Production in Yemen: Water Use, Competitiveness and Possible Policy Options for Change. Regional Office for the Near East, Cairo, Egypt.
32. Ferri C., De AraujoM M.J., Laranjeira R.R., Gossop M. The Severity of Dependence Scale (SDS) in an adolescent population of cannabis users: reliability, validity and diagnostic cut-off. Drug and Alcohol Review 2000, 19:451-455.
33. Feyissa A.M., Kelly J.P. A review of the neuropharmacological properties of khat. Progress in Neuro-psychopharmacology & Biological Psychiatry 2008, 32:1147-1166.
34. Freund-Michel V.C., Birrell M.A., Patel H.J., Murray-Lyon I.M., Belvisi M.G. Modulation of cholinergic contractions of airway smooth muscle by cathinone: potential beneficial effects in airway diseases. The European Respiratory Journal 2008, 32:579-584.
35. Gawin F.H., Kleber H.D. Abstinence symptomatology and psychiatric diagnosis in cocaine abusers. Archives of General Psychiatry 1986, 43:107-113.
36. Gelaw Y., Haile-Amlak A. Khat chewing and its socio-demographic correlates among the staff of Jimma University. Ethiopian Journal of Health and Development 2004, 18:179-184.
37. Gelaye B., Philpart M., Goshu M., Berhane Y., Fitzpatrick A.L., Williams M.A. Anger expression, negative life events and violent behaviour among male college students in Ethiopia. Scandinavian Journal of Public Health 2008, 36:538-545.
38. Gonzalez-Saiz F., Domingo-Salvany A., Barrio G., Sanchez-Niubo A., Brugal M.T., de la Fuente L., Alonso J. Severity of dependence scale as a diagnostic tool for heroin and cocaine dependence. European Addiction Research 2009, 15:87-93.
39. Gossop, M., 2000. Living with Drugs. Ashgate, Brookfield, Vt.
40. Gossop M. Drug Addiction and Its Treatment 2003, Oxford University Press, Oxford.
41. Gossop M., Best D., Marsden J., Strang J. Test-retest reliability of the severity of dependence scale. Addiction 1997, 92:353.
42. Gossop M.R., Bradley B.P., Brewis R.K. Amphetamine withdrawal and sleep disturbance. Drug and Alcohol Dependence 1982, 10:177-183.
43. Gossop M., Darke S., Griffiths P., Hando J., Powis B., Hall W., Strang J. The Severity of Dependence Scale (SDS): psychometric properties of the SDS in English and Australian samples of heroin, cocaine and amphetamine users. Addiction 1995, 90:607-614.
44. Griffiths P. Qat Use in London: a Study of Qat Use Among a Sample of Somalis Living in London. (Bd. Paper 26) 1998, Home Office, London.
45. Griffiths P., Gossop M., Wickenden S., Dunworth J., Harris K., Lloyd C. A transcultural pattern of drug use: qat (khat) in the UK. The British Journal of Psychiatry 1997, 170:281-284.
46. Halbach H. Medical aspects of the chewing of khat leaves. Bulletin of the World Health Organization 1972, 47:21-29.
47. Hassan N.A., Gunaid A.A., El Khally F.M., Murray-Lyon I.M. The subjective effects of chewing Qat leaves in human volunteers. Annals of Saudi Medicine 2002, 22:34-37.
48. Heatherton T.F., Kozlowski L.T., Frecker R.C., Fagerstrom K.O. The Fagerstrom test for nicotine dependence: a revision of the Fagerstrom tolerance questionnaire. British Journal on Addictions 1991, 86:1119-1127.
49. Hill A.B. The environment and disease: association or causation?. Proceedings of the Royal Society of Medicine 1965, 58:295-300.
50. Hunt S.M., Bhopal R. Self report in clinical and epidemiological studies with non-English speakers: the challenge of language and culture. Journal of Epidemiology and Community Health 2004, 58:618-622.
51. Kaiser H. A second generation Little Jiffy. Psycometrika 1970, 35:401-415.
52. Kaiser H. An index of factorial simplicity. Psychometrika 1974, 39:31-36.
53. Kalix P. The amphetamine-like releasing effect of the alkaloid (-)cathinone on rat nucleus accumbens and rabbit caudate nucleus. Progress in Neuro-psychopharmacology & Biological Psychiatry 1982, 6:43-49.
54. Kalix P. Pharmacological properties of the stimulant khat. Pharmacology & Therapeutics 1990, 48:397-416.
55. Kalix P., Braenden O. Pharmacological aspects of the chewing of khat leaves. Pharmacological Reviews 1985, 37:149-164.
56. Kassim, S., 2010. An exploration of the association between khat chewing and health outcomes in UK-residents male Yemeni khat chewers. Ph.D. thesis, Queen Mary University of London.
57. Kassim S., Croucher R. Khat chewing amongst UK resident male Yemeni adults: an exploratory study. International Dental Journal 2006, 56:97-101.
58. Kaye S., Darke S. Determining a diagnostic cut-off on the Severity of Dependence Scale (SDS) for cocaine dependence. Addiction 2002, 97:727-731.
59. Kebede D., Alem A., Mitike G., Enquselassie F., Berhane F., Abebe Y., Ayele R., Lemma W., Assefa T., Gebremichael T. Khat and alcohol use and risky sex behaviour among in-school and out-of-school youth in Ethiopia. BMC Public Health 2005, 5:109.
60. Kennedy J., Hurwit R. Qat's cradle. Human Behavior (October) 1978, 38-39.
61. Khawaja M., Al-Nsour M., Saad G. Khat (Catha edulis) chewing during pregnancy in Yemen: findings from a national population survey. Maternal and Child Health Journal 2008, 12:308-312.
62. Krikorian A. Khat and its use: an historical perspective. Journal of Ethnopharmacology 1984, 12:115-178.
63. Lawrinson P., Copeland J., Gerber S., Gilmour S. Determining a cut-off on the Severity of Dependence Scale (SDS) for alcohol dependence. Addictive Behaviors 2007, 32:1474-1479.
64. Lenard M., Al-Sabry M. The Rational peasant vs. sustainable livelihood: the case of Qat in Yemen. Society for International Development 1995, 3.
65. Luqman W., Danowski T.S. The use of khat (Catha edulis) in Yemen. Social and medical observations. Annals of Internal Medicine 1976, 85:246-249.
66. Marin G., Marin B.V. Research with Hispanic Population. Applied Social Research Methods Series 1991, vol. 23. Sage Publication, Inc., Newbury Park, CA.
67. Nabuzoka D., Badhadhe F. Use and perception of khat among young Somalis in a UK city. Addiction Research 2000, 8:5-26.
68. Nahas G.G. A pharmacological classification of drugs of abuse. Bulletin on Narcotics 1981, 33:1-19.
69. Nencini P., Grassi M.C., Botan A.A., Asseyr A.F., Paroli E. Khat chewing spread to the Somali community in Rome. Drug and Alcohol Dependence 1989, 23:255-258.
70. Nencini P., Ahmed A.M. Khat consumption: a pharmacological review. Drug and Alcohol Dependence 1989, 23:19-29.
71. Nencini P., Ahmed A.M., Amiconi G., Elmi A.S. Tolerance develops to sympathetic effects of khat in humans. Pharmacology 1984, 28:150-154.
72. Norman G.R., Streiner D.L. Biostatistics: The Bare Essentials 2000, B. C. Decker, Hamilton.
73. Numan N. Exploration of adverse psychological symptoms in Yemeni khat users by the Symptoms Checklist-90 (SCL-90). Addiction 2004, 99:61-65.
74. Odenwald, M., 2006. The use of the stimulant khat, war-related trauma and psychosis in Somalia. How changed use patterns of a traditional drug are related to psychiatric problems in a country in the transition from war to peace. Universität Konstanz. Dissertation zur Erlangung des Doktorgrades. (accessed on 20.10.08). http://deposit.ddb.de/cgi-bin/dokserv%3Fidn=983478139%26dok_var=d1%26dok_ext=pdf%26filename=983478139.pdf.
75. Odenwald, M., 2009. Motivations for using khat. In: European Science Foundation (ESF). The Changing Use and Misuse of Catha Edulis (Khat) in a Changing World: Tradition, Trade and Tragedy. Scandic Linkoping Vast, Linkoping, 5-9, October, Swede.
76. Odenwald, M., Neuner, F., Schauer, M., Elbert, T., Catani, C., Lingenfelder, B., Hinkel, H., Hafner, H., Rockstroh, B., 2005. Khat use as risk factor for psychotic disorders: a cross-sectional and case-control study in Somalia. BMC Med 3, 5.
77. Odenwald M., Warfa N., Bhui K., Elbert T. The stimulant khat-another door in the wall? A call for overcoming the barriers. Journal of Ethnopharmacology 2009.
78. Patel, S., Wright, S., Gammampila, A., 2005. Khat use among Somalis in four English cities (Bd. Home Office Online Report 47/05). Home Office.
79. Rousseau C., Said T.M., Gagne M.J., Bibeau G. Between myth and madness: the premigration dream of leaving among young Somali refugees. Culture, Medicine and Psychiatry 1998, 22:385-411.
80. Sawair F.A., Al-Mutwakel A., Al-Eryani K., Al-Surhy A., Maruyama S., Cheng J., Al-Sharabi A., Saku T. High relative frequency of oral squamous cell carcinoma in Yemen: qat and tobacco chewing as its aetiological background. International Journal of Environmental Health Research 2007, 17:185-195.
81. Sheffield Hallam University, 2003. Yemeni Community Survey in Sheffield, UK.
82. Streiner D.L. Breaking up is hard to do: the heartbreak of dichotomizing continuous data. Canadian Journal of Psychiatry 2002, 47:262-266.
83. Streiner D.L., Norman G.R. Health Measurement Scales: a Practical Guide to Their Development and Use 2003, Oxford University Press, Oxford.
84. Tabachnick B.G., Fidell L.S. Using Multivariate Statistics 2001, Allyn and Bacon, Boston, Mass, London.
85. Taylor C., Griffiths P. Sampling issues in drug epidemiology. Epidemiology of Drug Abuse 2005, 80-90. Springer Press. Z. Sloboda (Ed.).
86. Toennes S.W., Harder S., Schramm M., Niess C., Kauert G.F. Pharmacokinetics of cathinone, cathine and norephedrine after the chewing of khat leaves. British Journal of Clinical Pharmacology 2003, 56:125-130.
87. Topp L., Darke S. The applicability of the dependence syndrome to amphetamine. Drug and Alcohol Dependence 1997, 48:113-118.
88. Topp L., Mattick R.P. Choosing a cut-off on the Severity of Dependence Scale (SDS) for amphetamine users. Addiction 1997, 92:839-845.
89. Warfa N., Klein A., Bhui K., Leavey G., Craig T., Alfred Stansfeld S. Khat use and mental illness: a critical review. Social Science & Medicine 2007, 65:309-318.
90. WHO, 2003. Expert Committee on Drug Dependence. World Health Organ Tech Rep Ser 915, i-v, 1-26, back cover.
91. WHO, 2006. WHO Expert Committee on Drug Dependence. World Health Organ Tech Rep Ser, i, 1-21, 23-24 passim.
92. Woolverton W.L., Johanson C.E. Preference in rhesus monkeys given a choice between cocaine and d,l-cathinone. Journal of the Experimental Analysis of Behavior 1984, 41:35-43.
93. WorldBank, 2007. Yemen towards Qat demand reduction. Report No. 39738-YE.
94. Zein Z.A. Polydrug abuse among Ethiopian university students with particular reference to khat (Catha edulis). Journal of Tropical Medicine and Hygiene 1988, 91:71-75.