Table 2. References of different selections of studies.

^a Some publications include two or three separate studies.

Line number	Study selections	References
1	All studies	[2-6, 10-37]a
2	All therapeutic studies	[2,4,11-14,16,18,20,22-24,26,27,29,31,34,36,37]a
3	All preventive studies	[3,5,6,10,13,15,17,19,21,25,28,30,32,33,35]a
4	Therapeutic and preventive studies with numeric data on pain reduction	[2,4,6,10-18,20-24,26,27,29-37]a
5	Therapeutic studies with significant pain reduction	[2,4,11-14,16,18,20,22-24,26,29,31,34,36,37]a
6	Therapeutic studies without significant pain reduction	[27]a
7	Therapeutic studies with numeric data on disability reduction	[2,4,11,14,16,18,20,22, 23,26,27,29,34,37]a
8	Preventive studies with numeric data on pain reduction	[6,10,13,15,17,21,30,32,33,35]
9	Preventive studies without numeric data on pain reduction	[3,5,19,25,28]a
10	Preventive studies without significant pain reduction	[3,5,6,13,19,21,25,28,30,35]
11	Preventive studies with numeric data on disability reduction	[6,10,21,30,35]
12	Sick leave percentages in preventive studies	[3,5,10,19,21,28,35]a
13	Lumbopelvic pain percentages in preventive studies	[3,5,6,10,19,21,25,35]
14	Scandinavian studies without significant pain reduction	[5,6,19,21,27,28,35]a
15	Scandinavian study with a significant pain reduction	[10]