The Postural Assessment Scale for Stroke Patients: translation into Norwegian, cultural adaptation, and examination of reliability
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<b>Background:</b> To translate the Modified Swedish version of Postural Assessment Scale for Stroke (SwePASS) into Norwegian (SwePASS-NV) and assess its intra- and interrater reliability. <b>Methods:</b> Translation and cross-cultural adaptation was accomplished according to international guidelines. Forty-seven adults, suffering a stroke within the last 6 months, were strategically recruited and allocated into groups according to five different levels of function. Their performance on SwePASS-NV was video-recorded and then scored by three raters twice, with a minimum of 4 weeks between sessions. Relative reliability was investigated by calculating intraclass correlation coefficients (ICC<sub>1.1</sub> and ICC<sub>3.1</sub>). Absolute reliability was analysed using within-subject SD (S<sub>w</sub>) and smallest detectable difference (SDD). For individual items, Cohen’s kappa (<i>k</i>) and percentage of agreement were calculated. <b>Results:</b> The study showed excellent intra- and interrater reliability (ICC<sub>1.1</sub> and ICC<sub>3.1</sub> ≥0.99) for SwePASS-NV. <i>K</i>-values for the individual items ranged between 0.68 and 1.00. Percentages of agreement ranged from 77% to 100%. SDD at 95% confidence interval was ≤2 points for intrarater assessments and ≤3 points for interrater assessments. <b>Conclusions:</b> This study demonstrated very high intra- and interrater reliability of the SwePASS-NV in adults within the first 6 months after stroke. All items showed very high or high agreement.
