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Table 5 Item Summary, Internal Consistency Reliability, and Results of Exploratory Factor Analysis for Socioeconomic Scores reflective of Lower to Low middle (n = 170) and Upper middle to Upper (n = 133) levels

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
Lower (3–69) PLA 1.719 .816 - .739 .657 - 65.8
   Planning for .439 .341 .473 .756 - .747 -
   Interference with .560 .335 .605 .602 - .841 -
   Prevention from .720 .331 .616 .589 - .843 -
Upper (70–99) PLA 1.951 .718 - .721 .633 - 65.2
   Planning for .541 .316 .554 .621 - .852 -
   Interference with .621 .298 .640 .511 - .865 -
   Prevention from .790 .282 .444 .743 - .672 -