Abstract：
OBJECTIVE:This article addresses three reliability issues that are problematic in the construction of scales intended for use in psychosomatic research, illustrates how these problems may lead to errors, and suggests solutions. METHODS:We used psychometric results and present five computational studies. The first, third, and fourth studies are based on the generation of artificial data from psychometric models in combination with distributions for scale scores, as is common in psychometric research, whereas the second and fifth studies are analytical. RESULTS:The power of Student's t test depends more on sample size than on total-score reliability, but reliability must be high when one estimates correlations involving test scores. Short scales often do not allow total scores to be significantly different from a cutoff score. Coefficient alpha is uninformative about the factorial structure of questionnaires and is one of the weakest estimators of total-score reliability. CONCLUSIONS:The relationship between questionnaire length/reliability and statistical power is complex. Both in research and individual diagnostics, we recommend the use of highly reliable scales so as to reduce the chance of faulty decisions. The conclusion calls for profound statistical research producing hands-on rules for researchers to act upon. Factor analysis should be used to assess the internal consistency of questionnaires. As a reliability estimator, alpha should be replaced by better and readily available methods.
journal_name
J Psychosom Resjournal_title
Journal of psychosomatic researchauthors
Sijtsma K,Emons WHdoi
10.1016/j.jpsychores.2010.11.002subject
Has Abstractpub_date
2011-06-01 00:00:00pages
565-72issue
6eissn
0022-3999issn
1879-1360pii
S0022-3999(10)00432-0journal_volume
70pub_type
杂志文章,评审abstract：OBJECTIVE:The aim of the study was the gender specific analysis of cross-sectional and longitudinal associations between body mass index class (BMI-class) and symptoms of depression in a representative sample of elderly German people. METHODS:At the baseline of the ESTHER study (2000-2002), 9953 participants completed...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2012.01.019
更新日期：2012-05-01 00:00:00
abstract：OBJECTIVE:The objective of this study was to measure causal beliefs in individuals with psoriasis and to explore their relationship with perceived stress, quality of life, psychological well-being and psoriasis severity. METHODS:This study was cross-sectional in design, and patients were required to complete validated...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2004.03.012
更新日期：2004-11-01 00:00:00
abstract：:Due to the fact that oral contraceptives (OCs) can alter the pain threshold and since evidence of possible concomitant changes in the cardiovascular response to pain is still missing, an investigation of the response of heart rate (HR), blood pressure (BP), and systolic time interval (STI) to ischemic pain in OC users...
journal_title：Journal of psychosomatic research
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更新日期：1981-01-01 00:00:00
abstract：OBJECTIVE:The hyperarousal hypothesis is evaluated while controlling the influence of the quality of sleep in the night preceding the evaluation. METHOD:Eleven primary insomniacs and 11 healthy age matched controls participated to the study. Participants filled in 2 weeks of sleep logs and self-monitored their subject...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/s0022-3999(02)00579-2
更新日期：2003-01-01 00:00:00
abstract：OBJECTIVES:In patients treated with percutaneous coronary intervention (PCI) in the drug-eluting stent era, we compared women's and men's health status 6 and 12 months post-PCI and investigated whether predictors of poor health status at 12 months are similar for women and men. METHODS:Consecutive patients (n=692; 28%...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2006.01.003
更新日期：2006-07-01 00:00:00
abstract：:Sixty-seven patients suffering from spasmodic torticollis, a neurological disorder in which involuntary contractions of the head produce an abnormal head posture, completed a booklet of questionnaires aiming to assess psychosocial adjustment. Twenty-four per cent of the patients were moderately to severely depressed. ...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/0022-3999(91)90044-o
更新日期：1991-01-01 00:00:00
abstract：:Using a measure of bulimia (BULIT) that has demonstrated validity and reliability, the prevalence of bulimia among three samples of college females was found to range from 2.0 to 3.8%. These percentages are substantially lower than most previous reports would suggest. Factor analysis of the BULIT data revealed that th...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/0022-3999(87)90100-0
更新日期：1987-01-01 00:00:00
abstract：OBJECTIVE:There is wide variability in latency to attend hospital following a myocardial infarction (MI). The present study assessed possible psychological factors that may be implicated in delayed presentation. METHOD:Seventy-two patients who had experienced a confirmed MI were interviewed in hospital, 3-5 days post-...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/s0022-3999(01)00265-3
更新日期：2001-10-01 00:00:00
abstract：OBJECTIVE:Limb length discrepancy (LLD) is common in patients with developmental dysplasia of the hip (DDH) and may influence the psychological status of these patients. The present study aims to investigate depression and anxiety in DDH patients with different extents of LLD and to assess the effect of LLD correction ...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2015.08.002
更新日期：2015-12-01 00:00:00
abstract：OBJECTIVE:Some peer reviewers may inappropriately, or coercively request that authors include references to the reviewers' own work. The objective of this study was to evaluate whether, compared to reviews for a journal with single-blind peer review, reviews for a journal with open peer review included (1) fewer self-c...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2015.08.004
更新日期：2015-12-01 00:00:00
abstract：:This article reviews the evidence published in the English language literature concerning the pharmacological treatment of tics in patients with Tourette Syndrome. The focus is on the efficacy and safety of the current treatments. A clinical approach to pharmacological management of Tourette Syndrome patients is outli...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章,评审
doi：10.1016/s0022-3999(03)00060-6
更新日期：2003-07-01 00:00:00
abstract：OBJECTIVE:To explore the association between depressive symptom history and cancer incidence. METHODS:Affective/emotional depressive symptoms were assessed using the General Health Questionnaire (GHQ-30) depression sub-scale across phase 1 (1985-1988), phase 2 (1989-1990), and phase 3 (1991-1994) of the Whitehall II p...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2015.07.011
更新日期：2015-12-01 00:00:00
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journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2006.07.016
更新日期：2006-09-01 00:00:00
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journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2018.03.003
更新日期：2018-05-01 00:00:00
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doi：10.1016/j.jpsychores.2007.02.011
更新日期：2007-09-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.jpsychores.2012.06.002
更新日期：2012-09-01 00:00:00
abstract：OBJECTIVES:To compare the frequency of anxiety/depressive symptoms and use of anxiolytic-hypnotics/antidepressants in smokers with and without COPD and to identify characteristics associated with having unmedicated symptoms. METHODS:Cross-sectional analysis of ambulatory, current/former smokers ≥10 pack years enrolled...
journal_title：Journal of psychosomatic research
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更新日期：2019-03-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.jpsychores.2010.12.008
更新日期：2011-07-01 00:00:00
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更新日期：2019-08-01 00:00:00
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pub_type： 杂志文章
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更新日期：1990-01-01 00:00:00
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pub_type： 杂志文章
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更新日期：2016-10-01 00:00:00
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journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2006.09.003
更新日期：2007-02-01 00:00:00
abstract：BACKGROUND:Felt security in close relationships may affect individual adaptation responses to existential threat in severe illness. We examined the contribution of attachment security to demoralization, a state of existential distress involving perceived pointlessness and meaninglessness in advanced cancer. METHOD:A m...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2018.11.018
更新日期：2019-01-01 00:00:00
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journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2014.07.006
更新日期：2014-09-01 00:00:00
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journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/0022-3999(93)90097-y
更新日期：1993-10-01 00:00:00
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pub_type： 杂志文章
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更新日期：2020-05-01 00:00:00
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journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2010.10.002
更新日期：2011-03-01 00:00:00
abstract：OBJECTIVE:Early age at menarche has been found to be associated with higher oestrogen levels among girls around the onset of puberty and in early adulthood. The role of oestrogen in depression is not clear, although it affects serotonergic functions in the central nervous system (CNS). We wanted to test the hypothesis ...
journal_title：Journal of psychosomatic research
pub_type： 杂志文章
doi：10.1016/j.jpsychores.2004.01.008
更新日期：2004-10-01 00:00:00
