Table 1. Inter-Rater Reliability and Test-Retest Reproducibility of the Physical Activity Questionnaire.

From: Development of Modified Japanese Versions of Questionnaires to Assess Physical and Cognitively Stimulating Activities

Inter-rater reliability Test-retest reproducibility
Cronbach’s alpha coefficient Spearman’s rank correlation ICC (2,1) Spearman’s rank correlation
rho p-value rho p-value
Frequency Light physical activity 0.971 0.944 <0.0001 0.847 (0.743, 0.912) 0.825 <0.0001
Light exercise 0.977 0.972 <0.0001 0.854 (0.753, 0.916) 0.853 <0.0001
Moderate physical activity 0.969 0.744 <0.0001 0.933 (0.883, 0.962) 0.704 <0.0001
Moderate exercise 0.972 0.964 <0.0001 0.684 (0.498, 0.810) 0.819 <0.0001
Heavy physical activity 0.838 0.953 <0.0001 0.792 (0.656, 0.878) 0.822 <0.0001
Intense exercise 0.979 0.905 <0.0001 0.379 (0.113, 0.595) 0.576 <0.0001
Average duration per day (min) Light physical activities 0.955 0.904 <0.0001 0.874 (0.786, 0.928) 0.827 <0.0001
Light exercise 0.982 0.906 <0.0001 0.930 (0.879, 0.960) 0.823 <0.0001
Moderate physical activity 0.963 0.836 <0.0001 0.850 (0.747, 0.913) 0.600 <0.0001
Moderate exercise 0.914 0.896 <0.0001 0.762 (0.611, 0.859) 0.774 <0.0001
Heavy physical activity 0.948 0.951 <0.0001 0.205 (−0.084, 0.462) 0.786 <0.0001
Intense exercise 0.975 0.889 <0.0001 0.768 (0.623, 0.863) 0.596 <0.0001
Frequency × Duration Light physical activity 0.951 0.894 <0.0001 0.861 (0.765, 0.920) 0.818 <0.0001
Light exercise 0.982 0.955 <0.0001 0.576 (0.348, 0.739) 0.824 <0.0001
Moderate physical activity 0.996 0.793 <0.0001 0.990 (0.983, 0.995) 0.749 <0.0001
Moderate exercise 0.985 0.968 <0.0001 0.965 (0.938, 0.980) 0.824 <0.0001
Heavy physical activity 0.997 0.953 <0.0001 0.385 (0.112, 0.602) 0.802 <0.0001
Intense exercise 0.995 0.913 <0.0001 0.576 (0.353, 0.737) 0.583 <0.0001
Regular programs 1 1 1 <0.0001 1 (1, 1) 1
Table 2. Inter-Rater reliability and Test-Retest Reproducibility of the Cognitively Stimulating Activity Questionnaire.

From: Development of Modified Japanese Versions of Questionnaires to Assess Physical and Cognitively Stimulating Activities

Inter-rater reliability Test-retest reproducibility
Cronbach's alpha coefficient Spearman's rank correlation ICC (2,1) Spearman's rank correlation
rho p-value rho p-value
Reading newspapers 0.990 0.978 <0.0001 0.974 (0.954, 0.985) 0.979 <0.0001
Reading magazines 0.929 0.844 <0.0001 0.904 (0.835, 0.945) 0.816 <0.0001
Reading books 0.928 0.922 <0.0001 0.857 (0.759, 0.917) 0.857 <0.0001
Playing games 0.930 0.985 <0.0001 0.823 (0.706, 0.897) 0.871 <0.0001
Playing music by yourself 0.926 0.846 <0.0001 0.947 (0.907, 0.970) 0.846 <0.0001
Artistic activities 0.999 1.000 <0.0001 1 (1, 1) 1.000 <0.0001
Mental activities 1.000 0.937 <0.0001 0.994 (0.989, 0.996) 1.000 <0.0001
Handicraft 0.929 0.877 <0.0001 0.994 (0.990, 0.997) 0.899 <0.0001
Group activities 0.884 0.937 <0.0001 0.737 (0.577, 0.843) 0.691 <0.0001
Social activities 0.873 0.723 <0.0001 0.668 (0.475, 0.800) 0.743 <0.0001
Using a computer (including smartphone) 0.898 0.939 <0.0001 0.667 (0.478, 0.798) 0.773 <0.0001
Television 0.986 0.927 <0.0001 0.862 (0.767, 0.920) 0.889 <0.0001
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