Factor structure and reliability of the Hungarian version of the Illness Intrusiveness Scale

Relationships Among Pain Disability, Pain Intensity, Illness Intrusiveness, and Upper Extremity Disability in Patients With Traumatic Peripheral Nerve Injury

“…The validity and reliability of the Illness Intrusiveness Rating Scale have been established in patients with medical and surgical conditions. 15,16,19,26,27 The DASH is a 30-item questionnaire that assesses disability. Each item is ranked on a 5-point scale.…”

Validation study of the Chinese version of the Illness Intrusiveness Ratings Scale

“…As shown in Table 2, the items loading on Factor 1 were very different from those that loaded on the "instrumental" factor when extracted using data provided by Western respondents [9,13,16]. The factor observed in the present study combines items that loaded on all three factors in the Western data.…”

“…This value of interdependence and harmony with others, rather than individualism, may be more typical of Asians. Cross-cultural variations in construct validity of many psychometric-based health outcome measures have been well recognized in the literature [6,13,23,24,[30][31][32], particularly between Western countries and China, which may be partially explained by differences in the Western individualism and the Chinese collectivism culture [33,34].…”

“…Thus, the main contribution of the IIRS is reflected in its ability to quantify the negative influences incurred by various chronic disease experiences with easily interpretable numerical scores. The validity and reliability of this scale have been widely documented in various populations with chronic diseases, including cancer, hypertension, sleep disorders, and anxiety disorders [9][10][11][12][13][14][15][16]. A stable threefactor structure has been documented in studies conducted in Western countries [13,16].…”

“…The validity and reliability of this scale have been widely documented in various populations with chronic diseases, including cancer, hypertension, sleep disorders, and anxiety disorders [9][10][11][12][13][14][15][16]. A stable threefactor structure has been documented in studies conducted in Western countries [13,16]. A Korean version of the IIRS tested on outpatients with a variety of medical diagnoses identified a stable two-factor structure [15].…”