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Table 2 Test-retest reliability of physical activity, sedentary and travel behaviour self-report measures for Hong Kong adolescents

From: Repeatability of self-report measures of physical activity, sedentary and travel behaviour in Hong Kong adolescents for the iHealt(H) and IPEN – Adolescent studies

Item/Measure Overall sample (N = 68) Boys (n = 36) Girls (n = 32)
Setting/domain: SCHOOL    
Physical Education    
PE classes (days/week) NC (98%) NC (96%) NC (100%)
Length of PE period (min/class) 0.89 0.94 0.86
Total PE time (min/week) 0.84 0.87 0.81
Recess    
Recess at school (days/week) NC (94%) NC (92%) NC (98%)
Total length of recess (min/day) 0.69 0.64 0.72
Total recess time (min/week) 0.72 0.67 0.76
Number of sports teams or after-school physical activity classes at school in past year 0.74 (79%) 0.84 (89%) 0.65* (69%)
Setting/domain: OUT-OF-SCHOOL    
Leisure-time physical activity (PA)    
≥ 60 min/day of out-of-school PA in past 7 days (day/week) 0.70 (76%) 0.69 (69%) 0.72 (84%)
≥ 60 min/day of out-of-school PA in usual week (day/week) 0.79 (65%) 0.80 (67%) 0.78 (63%)
Average score on two out-of-school PA 0.76 0.74 0.77
Number of sports teams or after-school physical activity classes out-of-school in past year 0.89 (90%) 0.90 (92%) 0.87 (88%)
Sedentary behaviour (hours/day)    
Watching TV/videos/DVD 0.62 (74%) 0.61 (64%) 0.64 (78%)
Playing sedentary computer or video games 0.66 (72%) 0.65 (69%) 0.68 (75%)
Using internet/emailing/other electronic media for leisure 0.58 (65%) 0.59 (67%) 0.56 (63%)
Doing homework 0.78 (76%) 0.69 (67%) 0.85* (88%)
Reading a book or magazine (not for school) 0.61 (62%) 0.54 (57%) 0.67 (69%)
Riding in a car, bus, etc. 0.51 (68%) 0.52 (69%) 0.49 (67%)
Total screen time (hours/day) 0.62 0.61 0.63
Total sedentary time (hours/day) 0.65 0.62 0.67
Setting/domain: TRANSPORTATION    
Walking or cycling to/from destinations (times/week)    
Indoor or exercise facility 0.61 (76%) 0.55 (72%) 0.67 (81%)
Friend’s or relative house 0.48 (57%) 0.49 (58%) 0.45 (56%)
Outdoor recreation place 0.47 (62%) 0.47 (61%) 0.46 (63%)
Food store or restaurant/cafe 0.82 (80%) 0.78 (75%) 0.86 (84%)
Other retail stores 0.51 (62%) 0.46 (58%) 0.57 (66%)
Non-school social or educational activities 0.51 (68%) 0.52 (67%) 0.51 (69%)
Public transportation stop 0.71 (69%) 0.71 (69%) 0.71 (69%)
Work NA (100%) NA (100%) NA (100%)
Other NA (100%) NA (100%) NA (100%)
Total score on walking or cycling to/from destinations (times/week) 0.59 0.56 0.62
Transportation modes to/from school (days/week) [0–5]    
To school    
Walk 0.89 (90%) 0.87 (89%) 0.91 (91%)
Bicycle NC (100%) NC (100%) NC (100%)
Public transport 0.92 (97%) 0.92 (97%) 0.91 (97%)
Taxi NC (100%) NC (100%) NC (100%)
School bus NC (100%) NC (100%) NC (100%)
Family car 0.92 (96%) 0.89 (94%) 0.94 (97%)
From school    
Walk 0.76 (79%) 0.73 (72%) 0.79 (88%)
Bicycle NC (100%) NC (100%) NC (100%)
Public transport 0.68 (74%) 0.71 (78%) 0.66 (69%)
Taxi NC (100%) NC (100%) NC (100%)
School bus NC (100%) NC (100%) NC (100%)
Family car NC (99%) NC (97%) NC (100%)
Total frequency of active transportation to/from school (times/week) 0.88 0.86 0.90
  1. Notes. *Significant difference between genders (p < .05); NC = intra-class correlation coefficient could not be computed due to lack of variability in responses. Percent agreement is in brackets. All other values represent intra-class correlation coefficients. Percent agreement not computed for continuous measures.