Association between intelligence quotient and disability : The role of socioeconomic status / Louis Jacob in Annals of physical and rehabilitation medicine, Vol. 63, n°4 (Juillet 2020)

Public ISBD [article]  inAnnals of physical and rehabilitation medicine > Vol. 63, n°4 (Juillet 2020) . - p. 296-301 Titre : Association between intelligence quotient and disability : The role of socioeconomic status Type de document : texte imprimé Auteurs : Louis Jacob ; Lee Smith ; Philippe Thoumie ; Josep Maria Haro ; Andrew Stickley ; Ai Koyanagi Année de publication : 2020 Article en page(s) : p. 296-301 Note générale : doi.org/10.1016/j.rehab.2019.07.010 Langues : Anglais (eng) Mots-clés : Intelligence quotient  Disability  England  Epidemiology Résumé : Background No study has investigated the association between intelligence quotient (IQ) and disability (i.e., difficulties in activities of daily living [ADL] or instrumental activities of daily living [IADL]) in the general population. Objective The goal of this nationally representative study was to analyse the potential IQ–disability association in England and identify influential factors in this association. Methods Cross-sectional data were analyzed from the 2007 Adult Psychiatric Morbidity Survey (n = 6872). IQ was assessed by using the National Adult Reading Test, which consists of a list of 50 words and is scored by counting the number of errors in reading the words aloud. Disability was defined as difficulties in at least 1 of the 7 domains of ADL and IADL. Regression and mediation analyses were conducted to analyze the association between IQ and disability and identify potential factors involved in this relationship, estimating odds ratios (ORs) and 95% confidence intervals (CIs). Results Among the 6872 participants, the mean (SD) age was 46.9 (18.9) years; 51.8% were women. The prevalence of disability increased from 27.7% with IQ 120–129 to 51.0% with IQ 70–79. After adjusting for sex, age and ethnicity, as compared with IQ 120–129, with IQ 110–119, 100–109, 90–99, 80–89, and 70–79, the probability of disability was increased (OR 1.22 [95% CI 1.01–1.48], 1.42 [1.16–1.72], 1.86 [1.54–2.25], 2.41 [1.92–3.03], and 4.71 [3.56–6.17], respectively). In addition, we found a positive association between a 1-SD decrease in IQ and disability (OR 1.53, 95% CI 1.43–1.63). Finally, income (mediated percentage 26.9%), social class (18.0%) and education (11.6%) strongly affected the IQ–disability association, and these socioeconomic factors collectively explained 37.1% of the association. Conclusions Low IQ was positively associated with disability in England, and socioeconomic status explained more than one-third of this relationship. Permalink : ./index.php?lvl=notice_display&id=90864 [article] Association between intelligence quotient and disability : The role of socioeconomic status [texte imprimé] / Louis Jacob ; Lee Smith ; Philippe Thoumie ; Josep Maria Haro ; Andrew Stickley ; Ai Koyanagi . - 2020 . - p. 296-301. doi.org/10.1016/j.rehab.2019.07.010 Langues : Anglais (eng) in Annals of physical and rehabilitation medicine > Vol. 63, n°4 (Juillet 2020) . - p. 296-301 Mots-clés : Intelligence quotient  Disability  England  Epidemiology Résumé : Background No study has investigated the association between intelligence quotient (IQ) and disability (i.e., difficulties in activities of daily living [ADL] or instrumental activities of daily living [IADL]) in the general population. Objective The goal of this nationally representative study was to analyse the potential IQ–disability association in England and identify influential factors in this association. Methods Cross-sectional data were analyzed from the 2007 Adult Psychiatric Morbidity Survey (n = 6872). IQ was assessed by using the National Adult Reading Test, which consists of a list of 50 words and is scored by counting the number of errors in reading the words aloud. Disability was defined as difficulties in at least 1 of the 7 domains of ADL and IADL. Regression and mediation analyses were conducted to analyze the association between IQ and disability and identify potential factors involved in this relationship, estimating odds ratios (ORs) and 95% confidence intervals (CIs). Results Among the 6872 participants, the mean (SD) age was 46.9 (18.9) years; 51.8% were women. The prevalence of disability increased from 27.7% with IQ 120–129 to 51.0% with IQ 70–79. After adjusting for sex, age and ethnicity, as compared with IQ 120–129, with IQ 110–119, 100–109, 90–99, 80–89, and 70–79, the probability of disability was increased (OR 1.22 [95% CI 1.01–1.48], 1.42 [1.16–1.72], 1.86 [1.54–2.25], 2.41 [1.92–3.03], and 4.71 [3.56–6.17], respectively). In addition, we found a positive association between a 1-SD decrease in IQ and disability (OR 1.53, 95% CI 1.43–1.63). Finally, income (mediated percentage 26.9%), social class (18.0%) and education (11.6%) strongly affected the IQ–disability association, and these socioeconomic factors collectively explained 37.1% of the association. Conclusions Low IQ was positively associated with disability in England, and socioeconomic status explained more than one-third of this relationship. Permalink : ./index.php?lvl=notice_display&id=90864

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