USA

France

China

Philippines

Sample size

1106

324

200

267

Severity

0.87

0.86

0.86

0.80

Pain worst

0.68

0.64

0.74

0.74

Pain least

0.87

0.82

0.81

0.83

Pain average

0.87

0.80

0.91

0.75

Pain Nowl

0.78

0.82

0.76

0.77

Interference

0.91

0.90

0.91

0.86

General activity

0.80

0.79

0.91

0.86

Mood

0.79

0.85

0.71

0.71

Walking ability

0.71

0.63

0.82

0.72

Work

0.80

0.73

0.86

0.79

Relations with others

0.76

0.81

0.81

0.66

Sleep

0.68

0.56

0.62

0.60

Enjoyment of life

0.83

0.73

0.75

0.73