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The PROactive instruments to measure physical activity in patients with chronic obstructive pulmonary disease.

Gimeno-Santos E, Raste Y, Demeyer H, Louvaris Z, de Jong C, Rabinovich RA, Hopkinson NS, Polkey MI, Vogiatzis I, Tabberer M, Dobbels F, Ivanoff N, de Boer WI, van der Molen T, Kulich K, Serra I, Basagaña X, Troosters T, Puhan MA, Karlsson N, Garcia-Aymerich J, PROactive consorti - Eur. Respir. J. (2015)

Bottom Line: Our objective was item reduction and initial validation of two instruments to measure physical activity in COPD.Physical activity was assessed in a 6-week, randomised, two-way cross-over, multicentre study using PROactive draft questionnaires (daily and clinical visit versions) and two activity monitors.After item reduction, the daily PROactive instrument comprised nine items and the clinical visit contained 14.Confirmatory factor analysis supported the bidimensional structure.

View Article: PubMed Central - PubMed

Affiliation: Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain Universitat Pompeu Fabra (UPF), Barcelona, Spain FCS Blanquerna, Research Group in Physiotherapy (GReFis), Universitat Ramon Llull, Barcelona, Spain.

No MeSH data available.


Related in: MedlinePlus

Conceptual frameworks of a) the daily version of PROactive Physical Activity in COPD (chronic obstructive pulmonary disease) (D-PPAC) and b) the clinical visit version of PROactive Physical Activity in COPD (C-PPAC) instruments: final domains and items.
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Figure 3: Conceptual frameworks of a) the daily version of PROactive Physical Activity in COPD (chronic obstructive pulmonary disease) (D-PPAC) and b) the clinical visit version of PROactive Physical Activity in COPD (C-PPAC) instruments: final domains and items.

Mentions: Tables 2 and 3 detail the reasons for item flagging for exclusion: due to floor or ceiling effects, not fitting unidimensionality, redundancy, not proper ordering, differential item functioning or less relevant for patients and/or experts. For the D-PPAC, a total of five iterations in factor 1 (“amount”) allowed a reduction from nine to four items, including two variables from activity monitors (steps and vector magnitude unit (VMU)); and in factor 2 (“difficulty”), a total of 12 iterations allowed a reduction from 26 to five items. Full information on item removal is detailed in online supplementary table E5. The final version of the D-PPAC (see online supplement), described in figure 3, exhibited good performance and distribution of items, according to the person separation index (PSI) (0.83 in factor 1 with Dynaport, and 0.80 in factor 1 with Actigraph; 0.88 in factor 2) and the person-item map (fig. 4). Confirmatory factor analysis supported the two-factor structure and exhibited appropriate goodness of fit (online supplementary table E6).FIGURE 3


The PROactive instruments to measure physical activity in patients with chronic obstructive pulmonary disease.

Gimeno-Santos E, Raste Y, Demeyer H, Louvaris Z, de Jong C, Rabinovich RA, Hopkinson NS, Polkey MI, Vogiatzis I, Tabberer M, Dobbels F, Ivanoff N, de Boer WI, van der Molen T, Kulich K, Serra I, Basagaña X, Troosters T, Puhan MA, Karlsson N, Garcia-Aymerich J, PROactive consorti - Eur. Respir. J. (2015)

Conceptual frameworks of a) the daily version of PROactive Physical Activity in COPD (chronic obstructive pulmonary disease) (D-PPAC) and b) the clinical visit version of PROactive Physical Activity in COPD (C-PPAC) instruments: final domains and items.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4589432&req=5

Figure 3: Conceptual frameworks of a) the daily version of PROactive Physical Activity in COPD (chronic obstructive pulmonary disease) (D-PPAC) and b) the clinical visit version of PROactive Physical Activity in COPD (C-PPAC) instruments: final domains and items.
Mentions: Tables 2 and 3 detail the reasons for item flagging for exclusion: due to floor or ceiling effects, not fitting unidimensionality, redundancy, not proper ordering, differential item functioning or less relevant for patients and/or experts. For the D-PPAC, a total of five iterations in factor 1 (“amount”) allowed a reduction from nine to four items, including two variables from activity monitors (steps and vector magnitude unit (VMU)); and in factor 2 (“difficulty”), a total of 12 iterations allowed a reduction from 26 to five items. Full information on item removal is detailed in online supplementary table E5. The final version of the D-PPAC (see online supplement), described in figure 3, exhibited good performance and distribution of items, according to the person separation index (PSI) (0.83 in factor 1 with Dynaport, and 0.80 in factor 1 with Actigraph; 0.88 in factor 2) and the person-item map (fig. 4). Confirmatory factor analysis supported the two-factor structure and exhibited appropriate goodness of fit (online supplementary table E6).FIGURE 3

Bottom Line: Our objective was item reduction and initial validation of two instruments to measure physical activity in COPD.Physical activity was assessed in a 6-week, randomised, two-way cross-over, multicentre study using PROactive draft questionnaires (daily and clinical visit versions) and two activity monitors.After item reduction, the daily PROactive instrument comprised nine items and the clinical visit contained 14.Confirmatory factor analysis supported the bidimensional structure.

View Article: PubMed Central - PubMed

Affiliation: Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain Universitat Pompeu Fabra (UPF), Barcelona, Spain FCS Blanquerna, Research Group in Physiotherapy (GReFis), Universitat Ramon Llull, Barcelona, Spain.

No MeSH data available.


Related in: MedlinePlus