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Table 4 Item Summary, Internal Consistency Reliability, and Results of Exploratory Factor Analysis for Students Ages 9–11 years (n = 162) and 12–15 years (n = 142)

From: Reliability and construct validity of the Participation in Life Activities Scale for children and adolescents with asthma: an instrument evaluation study

    Internal Consistence Reliability Factor Analysis Principal Components
  M SD Item to Total Correlation Scale Alpha & if Item Deleted KMO Sampling Adequacy Rescaled Factor Loading (PC) Rescaled Amount of Variance Explained
Ages 9–11 PLA 1.767 .802 - .768 .680 - 68.4
   Planning for .475 .326 .57 .726 - .806 -
   Interference with .570 .320 .66 .616 - .862 -
   Prevention from .722 .324 .58 .716 - .810 -
Ages 12–15 PLA 1.872 .764 - .708 .655 - 62.8
   Planning for .490 .344 .46 .699 - .796 -
   Interference with .603 .320 .58 .542 - .823 -
   Prevention from .779 .299 .54 .598 - .759 -