From: Assessment of health-related quality of life and patient’s knowledge in chronic non-specific low back pain
Author/Year of publication
Place of the research
Sample size (N)
RMDQ sum value (standard deviation)
van Helvoirt et al 2014 [37]
Netherlands
69
7.00–15.40
Ghadyani et al 2016 [38]
Iran
136
5.95–6.37
Takahashi et al 2016 [39]
Japan
102
6.68(1.57)-9.52(1.60)
