Inter-observer reliability of trained physiotherapists on the Functional Status Score for the Intensive Care Unit Chilean-Spanish version

Reliability and validity of the Korean version of the Functional Status Score for the ICU after translation and cross-cultural adaptation

PURPOSE

The Functional Status Score for the Intensive Care Unit (FSS-ICU) evaluates the physical function of ICU patients. The objective of the study was to translate and cross-culturally adapt the FSS-ICU into Korean and assess its reliability and validity.

METHODS

An expert committee supervised the forward and backward translation process and the final translated version. Experienced physiotherapists assessed patients (n= 31) from a medical ICU using the Korean version of FSS-ICU. Intra-class correlation coefficients (ICCs) and Bland-Altman's plots were used to evaluate reliability, and Cronbach's alpha for internal consistency. Construct validity was evaluated using Spearman's correlation coefficients.

RESULTS

Two physiotherapists in each of the two university hospitals independently assessed 31 medical ICU patients, with a mean FSS-ICU total score of 23 (range: 4-35). The FSS-ICU Korean version demonstrated excellent internal consistency, with Cronbach's alpha of 0.897 for the total FSS-ICU score, and a range of 0.844-0.892 with deletion of each individual activity within the FSS-ICU. Intra-rater and inter-rater reliability were excellent for all of five FSS-ICU activities and the total score, with an ICC range of 0.930-0.993. Bland-Altman's plots revealed a mean difference in FSS-ICU total score of 0.2 (95% limits of agreement: -1.9 to 2.3) between two physiotherapists. The Korean version of FSS-ICU had good convergent and divergent validity with moderate to strong correlation with mobility and muscle strength measures, and poor correlation with unrelated measures.

CONCLUSIONS

The Korean version of the FSS-ICU showed excellent intra-rater and inter-rater reliability, internal consistency, and construct validity for medical ICU patients. The results of this study, along with prior publications, support that the FSS-ICU Korean version is a valid and reliable assessment tool for the ICU environment.Implications for rehabilitationIntensive care unit patients usually experience decreased muscle strength and physical function.The Korean version of the Functional Status Score for the Intensive Care Unit (FSS-ICU) is suitable for use with Korean speakers and has a valid, reliable measurement tool for physical function of intensive care unit patients.A well-standardized training with videos and written materials is important to ensure correct implementation of the Korean version of the FSS-ICU.

Turkish translation, cross-cultural adaptation, and assessment of psychometric properties of the Ottawa sitting scale for the intensive care unit survivors

PURPOSE

To translate and cross-culturally adapt the Ottawa Sitting Scale (OSS) developed for acute care patients into Turkish and to examine its psychometric properties in intensive care unit (ICU) survivors.

METHODS

After translation process the Turkish version of the scale was adminstered to eighty-one patients aged 39-82 years after discharge from the ICU and videotape was recorded. Two physiotherapists watched the videotaped records during the evaluation and scored. Test-retest reliability was assesed by scoring the same video recordings 15 days after the initial scoring. Correlations of the OSS with Berg Balance Scale (BBS), Functional Independence Measurement (FIM), the ICU length of stay and, total mechanical ventilation duration were assessed for convergent validity.

RESULTS

The intra-class correlation coefficient for inter and intra-rater reliability was 0.989-0.994 and 0.998 respectively. The internal consistency was excellent (Cronbach's α = 0.998). The OSS score was highly correlated with the BBS total score (r = 0.716), the BBS unsupported sitting item score (r = 0.863), and moderately correlated with the total score of the FIM (r = 0.602), the number of days in ICU (r= -0.545), and total mechanical ventilation duration (r = -0.518).

CONCLUSION

The Turkish version of OSS has been found to be valid and reliable in assessment of sitting balance in patients discharged from intensive care unit.Implications For RehabilitationPhysiotherapeutic measurements are crucial and necessary to determine the functional status of the patients.Ottawa Sitting Scale was translated and culturally adapted to Turkish and showed good psychometric propertiesOttawa Sitting Scale is valid and reliable tool to evaluate sitting balance in intensive care unit survivors.Ottawa Sitting Scale can guide clinicians in establishing evaluation and rehabilitation programs for patients discharged from intensive care unit.

Construct Validity of the Chilean-Spanish Version of the Functional Status Score for the Intensive Care Unit: A Prospective Observational Study Using Actigraphy in Mechanically Ventilated Patients

OBJECTIVE

To evaluate the construct validity (hypotheses testing) of the Chilean-Spanish version of the Functional Status Score for the Intensive Care Unit (FSS-ICU) using continuous actigraphy from intensive care unit (ICU) admission to ICU discharge.

DESIGN

The Chilean-Spanish version of the FSS-ICU was used in a prospective observational study to mainly evaluate its correlation with actigraphy variables. The FSS-ICU was assessed on awakening and at ICU discharge, while actigraphy variables were recorded from ICU admission to ICU discharge.

SETTING

A 12-bed academic medical-surgical ICU.

PARTICIPANTS

Mechanically ventilated patients (N=30), of 92 patients screened.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Construct validity of the FSS-ICU Chilean-Spanish version was assessed by testing 12 hypotheses, including the correlation with activity counts, activity time (>99 counts/min), inactivity time (0-99 counts/min), muscle strength, ICU length of stay, and duration of mechanical ventilation.

RESULTS

The median FSS-ICU was 19 points (interquartile range [IQR], 10-26 points) on awakening and 28.5 points (IQR, 22-32 points) at ICU discharge. There was no floor/ceiling effect of the FSS-ICU at awakening (0%/0%) and only a ceiling effect at ICU discharge that was acceptable (0%/10%). Less activity time was associated with better mobility on the FSS-ICU at both awakening (ρ=-0.62, P<.001) and ICU discharge (ρ=-0.79, P<.001). Activity counts and activity time were not correlated as expected with the FSS-ICU.

CONCLUSIONS

The Chilean-Spanish FSS-ICU had a strong correlation with inactivity time during the ICU stay. These findings enhance the available clinimetric properties of the FSS-ICU.