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Table 3 Internal Consistency and Reliability for Physical Activity Scales

From: Validation of a survey instrument to assess home environments for physical activity and healthy eating in overweight children

Scale from Home Environment Survey (All items developed for this survey based on literature review) Item Retained in final Home Environment Survey Cronbach's Alpha Inter-rater
Intra-Class Coefficients
Test-retest
Intra-Class Coefficients
Physical Activity Availability (Total Scale)   N.A. .88 .99
   Inside playroom Yes   .71 .79
   Exercise room Yes   .83 .84
   Sandbox Yes   .91 .92
   Driveway Yes   .79 .86
   Play area/yard Yes   1.0 .43
   Exercise equipment in TV area Yes   .57 .74
   Space to play in TV area Yes   .56 .71
   Swing Set Yes   .88 .95
   Bicycle Yes   1.00 .84
   Rollerblades/skates Yes   .66 .89
   Skateboard/scooter Yes   .72 .86
   Jump rope Yes   .88 .89
   Hiking shoes Yes   .76 .85
   Running shoes Yes   -.08 .76
   Basketball hoop Yes   .89 .93
   Baseball equipment Yes   .50 .78
   Racket Yes   .89 .84
   Hockey Equipment Yes   .95 .96
   Balls Yes   1.00 .43
   Pedometer Yes   .61 .82
   Winter Sports Equipment Yes   .85 .92
   Other Physically Active Toys Yes   .33 .60
Physical Activity Accessibility (Total Scale)   .66 .55 .78
   How many of your child's active toys are in working condition Yes   .26 .72
   How many of your child's active toys are stored in area child uses them Yes   .35 .69
   How many of your child's active toys does child need help getting out Yes   .47 .58
   How many of your child's active toys are stored out of sight Yes   .18 .73
Physical Activity Parental Role Modelling (Total Scale)   .68 .30 .85
   Your child sees you being physically active Yes   .22 .78
   Your child sees you doing house/yard work Yes   -.29 .61
   Your child sees you use Physical activity as relaxation Yes   .44 .67
   Your child sees you on the computer No   .22 .86
   Your child sees you watching TV/movies No   .42 .75
   Your child hears you talk about sports or physical activity Yes   .16 .73
   Your child hears you say you were too tired to be physically active Yes   .02 .63
   How often are you physically active with your child Yes   .39 .69
Physical Activity Parental Policies (Total Scale)   .79 .24 .80
   How often do you encourage your child to be physical active Yes   .08 .62
   How often do you transport your child for physical activity Yes   .48 .79
   How often do you send your child outside to play Yes   .44 .81
   How often do you give your child physical activity options Yes   .28 .61
   How often do you praise your child for being physically active Yes   -.06 .71