Article

The assessment of physical activity is of concern in patients after
total hip arthroplasty (THA). However, so far, no questionnaire has demonstrated
adequate reproducibility and validity for assessing physical activity in these
patients. The aim of this study was to evaluate the reproducibility
and validity of the Physical Activity Scale for the Elderly (PASE) questionnaire
in patients after THA.
This was a measurement study. METHODS: Fifty
patients who had undergone THA (25 women, 25 men), with an average age of 68
years, were evaluated. Of these patients, 25 were assessed between 2 and 7 months
after surgery (THAearly), and another 25 were assessed between 7 and 12 months
after surgery (THAlate). Reproducibility of the PASE questionnaire was evaluated
by administering the questionnaire on 2 different occasions. Construct validity
of the PASE questionnaire was assessed by comparing the physical activity level
reported by patients with that objectively recorded by a body-mounted
accelerometer. Reproducibility was investigated with intraclass correlation
coefficients (ICC [2,1]) for reliability and standard errors of measurement (SEM)
for agreement. Validity was investigated with Pearson correlation coefficients
(r). RESULTS: The ICC (2,1) for the PASE total score was .77 (95% confidence
interval [95% CI]=.63, .86); the SEM was 23.0% (95% CI=19.2, 28.7). Validity
correlation for the PASE total score was .38 (95% CI=.12, .60). No significant
differences were found between THAearly and THAlate groups for reliability,
agreement, and validity outcomes. LIMITATIONS: Reproducibility of the PASE
questionnaire may have been underestimated because the physical activity of
patients was compared between 2 consecutive but different weeks. Reliability and
validity analyses were underpowered. CONCLUSIONS: Further study with a larger
sample size is necessary to obtain precise reliability and validity estimates.
Nevertheless, inadequate agreement calls into question the PASE questionnaire's
ability to assess the physical activity level of patients after THA surgery.
CI - (c) 2015 American Physical Therapy Association.

Langue : ANGLAIS