@article{discovery10157777,
            note = {This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.},
       publisher = {SAGE PUBLICATIONS INC},
            year = {2022},
           month = {September},
         journal = {Clinical Psychological Science},
           title = {Psychological Distress Across Adulthood: Equating Scales in Three British Birth Cohorts},
        keywords = {Social Sciences, Science \& Technology, Life Sciences \& Biomedicine, Psychology, Clinical, Psychiatry, Psychology, epidemiology, public health, statistical analysis, preregistered, MENTAL-HEALTH, DEPRESSION, AGE, QUESTIONNAIRE, PROFILE, PERIOD, UK},
            issn = {2167-7026},
        abstract = {Valid and reliable life-course and cross-cohort comparisons of psychological distress are limited by differences in measures used. We aimed to examine adulthood distribution of symptoms and cross-cohort trends by equating the scales of psychological-distress measures administered in the 1946, 1958, and 1970 British birth cohorts. We used data from these three birth cohorts (N = 32,242) and an independently recruited calibration sample (n = 5,800) to inform the equating of scales. We used two approaches to equating scales (equipercentile linking and multiple imputation) and two index measures (General Health Questionnaire-12 and Malaise-9) to compare means, distributions, and prevalence of distress across adulthood. Although we consistently observed an inverse U shape of distress across adulthood, we also observed measure and method differences in point estimates, particularly for cross-cohort comparisons. Sensitivity analysis suggested that multiple imputation yielded more accurate estimates than equipercentile linking. Although we observed an inverse-U-shaped trajectory of psychological distress across adulthood, differences in point estimates between measures and methods did not allow for clear conclusions regarding between-cohorts trends.},
             url = {https://doi.org/10.1177/21677026221095856},
          author = {Jongsma, Hannah E and Moulton, Vanessa G and Ploubidis, George B and Gilbert, Emily and Richards, Marcus and Patalay, Praveetha}
}