Table 3: Brief pain inventory questionnaire (BPI): comparison between DM1 and DM2

Pain interfering with activity (1 - does not interfere, 10 - interferes completely)1	Overall (N=70)	DM1 (N=21)	DM2 (N=49)	p
General activity	3.5 (±2.9)	3.6 (±3.3)	3.5 (±2.8)	0.867
Mood	3.1 (±2.7)	3.2 (±3.1)	3.0 (±2.6)	0.719
Mobility	3.4 (±3.0)	3.6 (±3.4)	3.3 (±2.9)	0.678
Normal work	3.7 (±3.2)	3.8 (±3.4)	3.6 (±3.1)	0.816
Relationships with other people	2.4 (±2.3)	2.2 (±2.2)	2.4 (±2.3)	0.668
Sleep	3.2 (±3.3)	3.3 (±3.5)	3.1 (±3.3)	0.773
Enjoyment of life	2.8 (±2.7)	3.1 (±3.0)	2.7 (±2.6)	0.616

¹The variables are described in terms of average (± SD); statistical testing by unpaired t-test