A randomized double-blind placebo-controlled trial to investigate the effectiveness and safety of a novel green-lipped mussel extract -BioLex® -for managing pain in moderate to severe osteoarthritis of the hip and knee

Table 1 Participant demographics

	Overall (n = 80)	Intervention (n = 39)	Control (n = 41)
Sex-male^a	36 (45)	17 (44)	19 (46)
Age^b	66.4 (10.0)	66.5 (10.8)	66.3 (9.3)
Ethnicity (total response^d)^a
European	77 (96)	38 (97)	39 (95)
Māori	4 (5)	1 (3)	3 (7)
Pacific Peoples	1 (1)	0	1 (2)
BMI^b	30.1 (5.4)	29.4 (5.1)	30.7 (5.6)
Pre-enrolment pain scale^b	5.3 (2.0)	5.4 (2.0)	5.2 (2.0)
Pre-enrolment HAQ (Anglicized)^c	0.75 (0.75)	0.75 (0.50)	0.75 (1.0)
Kellgren-Lawrence x-ray grade^a
1	7 (9)	3 (7)	4 (10)
2	15 (19)	6 (15)	9 (22)
3	18 (23)	12 (31)	6 (15)
4	40 (50)	18 (46)	22 (54)
Pre-enrolment Global assessment^b
physician	5.7 (1.4)	5.7 (1.3)	5.7 (1.5)
patient	5.2 (1.8)	5.3 (1.8)	5.2 (1.8)
missing	1	0	1

^an (%) ^bmean (SD) ^cmedian (IQR) ^dPercentages could add to more than 100 as participants could identify with more than one ethnicity