The goal of this study was to validate the French version of the Quality of Life in Bipolar Disorder (QoL.BD) scale, a condition-specific measure for bipolar disorder (BD).
Method:
The QoL.BD scale was translated into French in accordance with the recommendations for transcultural adaptation. It was administered to 125 participants with BD living in Quebec, Canada. Construct validity was evaluated through correlations with other measures of self-reported quality of life (QoL), functioning, and symptoms. Factorial structure was examined through an exploratory factor analysis.
Results:
Internal reliability and test–retest reliability standards were met. Correlations in expected directions with other QoL, functioning, and depressive symptom scales supported convergent validity. The item loadings structure of the French QoL.BD largely replicated the original English version, with some modifications.
Conclusion:
The French version of the QoL.BD (full and brief) is comparable in its psychometric properties to the English version. It is a valid and sound measure for the evaluation of the QoL of French-speaking patients with BD.
MerikangasKRAkiskalHSAngstJ, et al.Lifetime and 12-month prevalence of bipolar spectrum disorder in the national comorbidity survey replication. Arch Gen Psychiatry. 2007;64(5):543–552. doi: 10.1001/archpsyc.64.5.543.
2.
FerrariAJStockingsEKhooJP, et al.The prevalence and burden of bipolar disorder: findings from the Global Burden of Disease Study 2013. Bipolar Disord. 2016;18(5):440–450. doi: 10.1111/bdi.12423.
3.
MurrayGMichalakEE. The quality of life construct in bipolar disorder research and practice: past, present, and possible futures. Bipolar Disord. 2012;14(8):793–796. doi: 10.1111/bdi.12016.
4.
MortonEMichalakEEMurrayG. What does quality of life refer to in bipolar disorders research? a systematic review of the construct’s definition, usage and measurement. J Affect Disord. 2017;212:128–137. doi: 10.1016/j.jad.2017.01.026.
5.
JoyceCRO’BoyleCAMcGeeHM. Introduction: the individual perspective. In: JoyceCRO’BoyleCAMcGeeHM, editors. Individual quality of life: approaches to conceptualisation and assessment. New York (NY): Routledge; 1999. p. 3–8.
6.
BowlingA. What things are important in people’s lives? a survey of the public’s judgements to inform scales of health related quality of life. Soc Sci Med. 1995;41(10):1447–1462. doi: 10.1016/0277-9536(95)00113-L.
7.
GuyattGHKingDRFeenyDHStubbingDGoldsteinRS. Generic and specific measurement of health-related quality of life in a clinical trial of respiratory rehabilitation. J Clin Epidemiol. 1999;52(3):187–192. doi: 10.1016/s0895-4356(98)00157-7.
8.
WiebeSGuyattGWeaverBMatijevicSSidwellC. Comparative responsiveness of generic and specific quality-of-life instruments. J Clin Epidemiol. 2003;56(1):52–60. doi: 10.1016/s0895-4356(02)00537-1.
9.
BindmanABKeaneDLurieN. Measuring health changes among severely ill patients: the floor phenomenon. Med Care. 1990;28(12):1142–1152. doi: 10.1097/00005650-199012000-00003.
10.
MichalakEEMurrayG. Development of the QoL.BD: a disorder-specific scale to assess quality of life in bipolar disorder. Bipolar Disord. 2010;12(7):727–740. doi: 10.1111/j.1399-5618.2010.00865.x.
11.
YathamLNMackalaSBasivireddyJ, et al.Lurasidone versus treatment as usual for cognitive impairment in euthymic patients with bipolar I disorder: a randomised, open-label, pilot study. Lancet Psychiatry. 2017;4(3):208–217. doi: 10.1016/S2215-0366(17)30046-9.
12.
CalabreseJRSanchezRJinN, et al.Symptoms and functioning with aripiprazole once-monthly injection as maintenance treatment for bipolar I disorder. J Affect Disord. 2018;227:649–656. doi: 10.1016/j.jad.2017.10.035.
13.
FletcherKFoleyFThomasN, et al.Web-based intervention to improve quality of life in late stage bipolar disorder (ORBIT): randomised controlled trial protocol. BMC Psychiatry. 2018;18(1):221. doi: 10.1186/s12888-018-1805-9.
14.
JonesSHSmithGMulliganLD, et al.Recovery-focused cognitive-behavioural therapy for recent-onset bipolar disorder: randomized controlled pilot trial. Br J Psychiatry. 2015;206(1):58–66. doi: 10.1192/bjp.bp.113.141259.
15.
JoneSHKnowlesDTylesE, et al.The feasibility and acceptability of a novel anxiety in bipolar disorder intervention compared to treatment as usual: a randomized controlled trial. Depress Anxiety. 2018;35(10):953–965. doi: 10.1002/da.22781.
16.
BeckAKBakerAJonesS, et al.Exploring the feasibility and acceptability of a recovery-focused group therapy intervention for adults with bipolar disorder: trial protocol. BMJ Open. 2018;8(1):e019203. doi: 10.1136/ bmjopen-2017-019203.
17.
MortonEHouSHJFogartyO, et al.A web-based adaptation of the quality of life in bipolar disorder questionnaire: psychometric evaluation study. JMIR Mental Health. 2020;7(4):e17497. doi: 10.2196/17497.
18.
MortonEHoleRMurrayGSimoneBErinM. Experiences of a web-based quality of life self-monitoring tool for individuals with bipolar disorder: a qualitative exploration. JMIR Mental Health. 2019;6(11):e16121. doi: 10.2196/16121.
GuilleminFBombardierCBeatonD. Cross-cultural adaptation of health-related quality of life measures: literature review and proposed guidelines. J Clin Epidemiol. 1993;46(12):1417–1432. doi: 10.1016/0895-4356(93)90142-N.
23.
EndicottJNeeJHarrisonW, et al.Quality of life enjoyment and satisfaction questionnaire: a new measure. Psychopharmacol Bull. 1993;29(2):321–326.
24.
WareJESherbourneCD. The MOS 36-item short-form health survey (SF-36): conceptual framework and item selection. Med Care. 1992;30(6):473–483. doi: 10.1097/00005650-199206000-00002.
25.
The WHOQOL Group. Development of the world health organization WHOQOL-Bref quality of life assessment. Psychol Med. 1998;28(3):551–558. doi: 10.1017/s0033291798006667.
26.
ÜstünTBKostanjsekNChatterjiS, et al.Measuring health and disability: manual for WHO Disability Assessment Schedule WHODAS 2.0. Geneva, Switzerland: World Health Organization; 2010.
27.
SpitzerRLKroenkeKWilliamsJB. Validation and utility of a self-report version of PRIME-MD: the PHQ primary care study. primary care evaluation of mental disorders. patient health questionnaire. JAMA. 1999;282(18):1737–1744. doi: 10.1001/jama.282.18.1737.
NunnallyJCBernsteinIH. Psychometric theory. 3rd ed. New York (NY):McGraw-Hill; 1994.
30.
TabachnickBGFidellLSUllmanJB. Using multivariate statistics. 7th ed. Vol. 5. Boston (MA): Pearson; 2007.
31.
MorgadoCTapiaTIvanovic-ZuvicF, et al.Evaluación de la calidad de vida de pacientes bipolares chilenos: propiedades psicométricas y utilidad diagnóstica de la versión chilena del cuestionario quality of life bipolar disorder (QoL. BD-CL). 2015;143(2):213–222. doi: 10.4067/S0034-98872015000200009.
32.
XiaoLGaoYZhangLPeiyunCXiaojiaSSiyuanT. Validity and reliability of the brief version of quality of life in bipolar disorder” (Brief QoL.BD) among Chinese bipolar patients. J Affect Disord. 2016;193:66–72. doi: 10.1016/j.jad.2015.12.074.
33.
GümüşFÇakirSKesebirSMichalakEEGregM. Psychometric properties of the Turkish version of the brief quality of life in bipolar disorder (Brief QoL.BD) scale. J Psych Nurs. 2018;9(3):170–174. doi: 10.14744/phd.2018.93723.
34.
IsHakWWBrownKAyeSSKahloonMMobarakiSHannaR. Health-related quality of life in bipolar disorder. Bipolar Disord. 2012;14(1):6–18. doi: 10.1111/j.1399-5618.2011.00969.x.
35.
MichalakEEYathamLNLamRW. Quality of life in bipolar disorder: a review of the literature. Health Qual Life Outcomes. 2005;3(1):72. doi: 10.1186/1477-7525-3-72.
36.
DeppCADavisCEMittalDThomasLPDilipVJ. Health-related quality of life and functioning of middle-aged and elderly adults with bipolar disorder. J Clin Psychiatry. 2006;67(2):215–221. doi: 10.4088/JCP.v67n0207.
37.
DeppCAMausbachBTEylerLT, et al.Performance-based and subjective measures of functioning in middle-aged and older adults with bipolar disorder. J Nerv Ment Dis. 2009;197(7):471–475. doi: 10.1097/NMD.0b013e3181ab5c9b.
38.
GazalleFKFreyBNHallalPC, et al.Mismatch between self-reported quality of life and functional assessment in acute mania: a matter of unawareness of illness?J Affect Disord. 2007;103(1-3):247–252. doi: 10.1016/j.jad.2007.01.013.
39.
Gutiérrez-RojasLGurpeguiMAyuso-MateosJL, et al.Quality of life in bipolar disorder patients: a comparison with a general population sample. Bipolar Disord. 2008;10(5):625–634. doi: 10.1111/j.1399-5618.2008.00604.x.
40.
MichalakEETorresIJBondDJ, et al.The relationship between clinical outcomes and quality of life in first-episode mania: a longitudinal analysis. Bipolar Disord. 2013;15(2):188–198. doi: 10.1111/bdi.12049.
41.
HayhurstHPalmerSAbbottRJohnsonTJanS. Measuring health-related quality of life in bipolar disorder: relationship of the EuroQol (EQ-5D) to condition-specific measures. Qual Life Res. 2006;15(7):1271–1280. doi: 10.1007/s11136-006-0059-z.
42.
SylviaLGMontanaREDeckersbachT, et al.Poor quality of life and functioning in bipolar disorder. Int J Bipolar Disord. 2017;5(1):1–8. doi: 10.1186/s40345-017-0078-4.
MortonEMurrayGMichalakEE, et al.Quality of life in bipolar disorder: towards a dynamic understanding. Psychol Med. 2018;48(7):1111–1118. doi: 10.1017/s0033291717002495.
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