Dale L. Johnson

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BACKGROUND AND PURPOSE To be useful for clinical research, an outcome measure must be feasible to administer and have sound psychometric attributes, including reliability, validity, and sensitivity to change. This study characterizes the psychometric properties of the Stroke Impact Scale (SIS) Version 2.0. METHODS Version 2.0 of the SIS is a self-report(More)
In a sample of 3- and 5-yr.-old children, smoking in the home was found to be significantly and inversely related to IQ. Children of normal birth weight and without neurological impairment had been enrolled in a longitudinal study of child development. Analyses were conducted with sex, ethnicity, socioeconomic status, educational stimulation in the home,(More)
The relation of infant feeding practices, cigarette smoke exposure, and group child care to the onset and duration of otitis media with effusion (OME) was evaluated in a cohort of 698 healthy infants prospectively monitored by tympanometry in the home every 2 to 4 weeks until 2 years of age. Except for an experimental group of children who were offered(More)
OBJECTIVE This study tested the hypothesis that children with early persistent middle ear effusion (MEE) are at risk for later language deficit. METHOD We recruited 698 newborns and monitored them for MEE every 2 to 4 weeks at home until age 3 years. Language skills were assessed on 294 subjects at age 5, while controlling for 8 demographic and(More)
Current stroke outcome measures are unable to detect some consequences of stroke that affect patients, families, and providers. The objective of this study was to ensure the content validity of a new stroke outcome measure. This was a qualitative study using individual interviews with patients and focus group interviews with patients, caregivers, and health(More)
UNLABELLED This study examined the relation of middle ear effusion (MEE) in the first 3 years of life to language outcomes at age seven. It was hypothesized, on the basis of a literature review, that (1) a low, but positive relation between early MEE and language measures in general will be observed at age seven, and (2) major effects will be demonstrated(More)
The severe mental illnesses are psychiatric disorders characterized by their persistence and extensive disability. Classification of these disorders has seen improved reliability, but problems remain with validity. Etiological formulations emphasize the biological origins of the disorders, but psychological factors, chiefly in the area of stress, are(More)
Breast feeding was reported in 1992 by Lucas, et al. to provide advantages for the development of intelligence in children of low birth weight, possibly through nutrients or other biological factors found in human breast milk but not cow's milk. Research on breast feeding and intelligence in children of normal birth weight has yielded mixed results,(More)