Severity: Warning
Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
Filename: helpers/my_audit_helper.php
Line Number: 176
Backtrace:
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML
File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global
File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword
File: /var/www/html/index.php
Line: 316
Function: require_once
Participants in the North American Research Committee on Multiple Sclerosis (NARCOMS) Registry report disability using Performance Scales (PS), which assess eight domains. We aimed to validate the PS fatigue subscale (PSF) using the Fatigue Severity Scale (FSS) and the Modified Fatigue Impact Scale (MFIS) as external criteria. We measured correlations between the PSF and age, disease duration and PS subscales to assess construct validity. The PSF correlated strongly with the MFIS (r =0.72, P <0.0001) and FSS (r =0.75, P <0.0001). Correlations between the PSF and age, disease duration were low, indicating divergent validity. Correlations between the PSF and spasticity, sensory and mobility PS scales were moderate, indicating convergent validity. The PSF has adequate criterion and construct validity in MS.
Download full-text PDF |
Source |
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http://dx.doi.org/10.1191/1352458505ms1216oa | DOI Listing |
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