Comparison of Self-Report and Interview Administration Methods Based on the Brazilian Versions of the Western Ontario Rotator Cuff Index and Disabilities of the Arm, Shoulder and Hand Questionnaire in Patients with Rotator Cuff Disorders

Abstract

OBJECTIVE:The purpose of the present study was to compare self-report and interview administration methods using the Western Ontario Rotator Cuff Index (WORC) and Disabilities of the Arm, Shoulder and Hand Questionnaire (DASH) in patients with rotator cuff disorders. METHODS: Thirty male and female patients over 18 years of age with rotator cuff disorders (tendinopathy or rotator cuff tear) and Brazilian Portuguese as their primary language were recruited for assessment via administration of the Western Ontario Rotator Cuff Index and and Disabilities of the Arm, Shoulder and Hand Questionnaire. A randomization method was used to determine whether the questionnaires would be self-reported (n=15) or administered by an interviewer (n=15). Pearson correlation coefficients were used to evaluate the correlation between the Western Ontario Rotator Cuff Index and and Disabilities of the Arm, Shoulder and Hand Questionnaire in each group. The t-test was used to determine whether the difference in mean questionnaire scores and administration time was statistically significant. For statistical analysis, the level of significance was set at 5%. RESULTS: The mean subject age was 55.07 years, ranging from 27 to 74 years. Most patients had a diagnosis of tendinopathy (n=21). With regard to level of schooling, the majority (n=26) of subjects had completed a college degree or higher. The mean questionnaire scores and administration times did not significantly differ between the two groups (p>0.05). There were statistically significant correlations (p<0.05) between Western Ontario Rotator Cuff Index and and Disabilities of the Arm, Shoulder and Hand Questionnaire, and strong correlations were found between the questionnaires in both groups. CONCLUSION: There are no differences between the Western Ontario Rotator Cuff Index and Disabilities of the Arm, Shoulder and Hand Questionnaire administration methods with regard to administration time or correlations between the questionnaires.

Avaliação das adaptações transculturais e propriedades de medida de questionários relacionados às disfunções do ombro em língua portuguesa: uma revisão sistemática

“…From these, seven different instruments that had been translated and cross-culturally adapted into Portuguese were identified: DASH (Disabilities of the Arm, Shoulder and Hand) 16 , SPADI (Shoulder Pain and Disability Index) 17 , WORC (Western Ontario Rotator Cuff Index) 18 , ASES (American Shoulder and Elbow Surgeons Questionnaire) 19 , PSS (Penn Shoulder Score) 20 , ASORS (Athletic Shoulder Outcome Rating Scale) 20 and Modified-UCLA (Modified-University of California at Los Angeles Shoulder Rating Scale) 21 . Of the seven instruments translated and cross-culturally adapted into Portuguese, five had been tested for at least one measurement property: (DASH 16,22 Table 1. Guidelines for the process of cross-cultural adaptation of self-report measures 13 (adapted from Costa et al 31 ).…”

“…Construct validity was tested in three studies (DASH 16,22 , WORC 23 and ASORS 25 ). All of them used Pearson Correlation tests, which involve correlating a questionnaire with other similar instruments.…”

“…Factorial analysis was performed only for the DASH. Construct validity was not properly tested in any of the instruments found in this review (DASH 16,22 , WORC 23,24 and ASORS 25 ) due to the fact that the hypothesis regarding the correlations of the instruments/ scales had not been formulated a priori. Responsiveness was tested in one study that involved DASH, WORC and UCLA 24 , but it could not be considered appropriate due to a small sample size (i.e.…”

“…Ceiling and floor effects were not tested in any of the instruments identified in our systematic review. Almost all of the measurement properties were tested for the DASH and WORC; only ceiling and floor effects were not tested for the WORC [22][23][24] , whereas both ceiling and floor effects and agreement were not tested for the DASH 20,23,24,26 .…”

Comparability of Interviewer-Administration Versus Self-Administration of the Functional Assessment of Chronic Illness Therapy-Tuberculosis (FACIT-TB) Health-Related Quality of Life Questionnaire in Pulmonary Tuberculosis Patients

“…A common interpretation of this phenomenon is that participants may indicate less health impairment when interviewed by a research personnel as compared to self-administration, thereby overestimating their health status [4]. Conversely, other studies have found the opposite effect [8] or no meaningful differences due to administration formats for some or all of the QoL domains [9][10][11]. In 2005, Bowling raised a concern about the potential bias effects of mode of administration on the quality and interpretation of the data collected [4].…”