Abstract：
:Due to the difficulties in recruiting elderly people for psychological studies, a wide range of recruitment methods has been used. The underlying assumption that the recruitment method does not seriously affect the results has to be tested. Results in different worry measures are compared between three samples which were recruited with different strategies: (i) randomization sampling from the census of an urban area (random sample; n=97); (ii) people involved in leisure activities in senior centers (convenience sample; n=142); and (iii) people from the close environment of psychology students (snowball sample; n=60). People from those samples, aged 65 and more, completed the Penn State Worry Questionnaire (trait-worry), and the Worry Scale (contents of worry). Differences were found for several demographic characteristics. There were marked differences between samples in the percentage of individuals endorsing cut-score criteria for generalized anxiety disorder (GAD), with a very high percentage for the snowball sample. For all of the worry measures, analyzes of variance revealed significantly higher total scores for the non-randomly selected samples (p<0.01). Comparing the latter samples, higher trait worry (p<0.01) and more worrying about health and personal competencies (p<0.01) was found in the snowball sample. These results suggest that the sample recruitment method can specifically and seriously affect the outcomes of studies with elderly people, thus limiting the generalization of their results.
journal_name
Arch Gerontol Geriatrjournal_title
Archives of gerontology and geriatricsauthors
Izal M,Nuevo R,Montorio I,Pérez-Rojo Gdoi
10.1016/j.archger.2007.09.009subject
Has Abstractpub_date
2009-01-01 00:00:00pages
45-9issue
1eissn
0167-4943issn
1872-6976pii
S0167-4943(07)00215-4journal_volume
48pub_type
杂志文章,多中心研究,随机对照试验abstract：:Experimental animal studies carried out over the past 40 years have unequivocally shown that neurogenic mechanisms are involved in the pathogenesis of hypertension. The results of these studies also suggest that neural factors are important not only in the development but also in the maintenance of the high blood pres...
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pub_type： 杂志文章
doi：10.1016/0167-4943(84)90017-7
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