Renee Taylor, Sun Wook Lee, Jessica Kramer, Yukiko Shirashi, Gary Kielhofner; Psychometric Study of the Occupational Self Assessment With Adolescents After Infectious Mononucleosis. Am J Occup Ther 2011;65(2):e20-e28. doi: 10.5014/ajot.2011.000778.
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We examined the psychometric characteristics of the Occupational Self Assessment (OSA), which measures clients’ perceptions of their own competence and the value they assign to occupations. Two hundred ninety-six adolescents with acute mononucleosis completed the OSA, the Fatigue Scale, the Checklist of Infectious Symptoms, the Child Health Questionnaire, and the Perceived Stress Scale. OSA items coalesced to capture the intended constructs; the rating scales functioned as intended. More than 90% of adolescents were validly measured. The OSA showed adequate sensitivity and was stable over time. OSA measure of competence was moderately associated with infectious symptoms, fatigue severity, health status, and stress, and the measure of values was not. Neither measure was associated with age, gender, or ethnicity. Finally, adolescents who had not recovered from mononucleosis after 12 mo showed lower competence scores yet attached the same value or importance to occupational participation as adolescents who had recovered.
The Checklist of Infectious Symptoms (Buchwald et al., 2000) is a self-report measure of the presence and severity of mono symptoms. It was developed for and used in a large-scale adult study of chronic fatigue syndrome after mono (Buchwald et al., 2000).
The Fatigue Scale (Chalder et al., 1993), which evaluates fatigue severity, has been found to be reliable and valid (Chalder et al., 1993) and has been used extensively in a variety of community-based and clinic-based studies of fatigue (e.g., Pawlikowska et al., 1994).
The Global Health Scale from the Child Health Questionnaire (Landgraf, Abetz, & Ware, 1996) is a measure of health-related quality of life with well-established psychometric properties.
The Perceived Stress Scale (Cohen, Kamarck, & Mermelstein, 1983) measures self-reported stress in community-based populations; it has well-established psychometric properties and has been used in numerous studies of populations with and without disability.
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