6wk (n=1420)	3mo (n=1367)	6mo (n=1134)	9mo (n=1116)	12mo (n=1078)
No care	22 (1.5)	23 (1.7)	37 (3.3)	50 (4.5)	59 (5.5)
All contacts∗
MD	1364 (95.9)	1312 (95.7)	1188 (93.8)	1042 (93.0)	988 (91.4)
PT	592 (41.7)	641 (46.8)	679 (53.8)	618 (55.4)	606 (56.2)
DC	282 (19.9)	356 (26.2)	390 (30.9)	373 (33.4)	375 (34.7)
MT	346 (24.4)	393 (28.7)	385 (30.5)	382 (34.2)	370 (34.4)
Other	143 (10.1)	162 (11.8)	174 (13.8)	149 (13.3)	133 (12.3)
Care only from
MD	425 (29.9)	341 (24.9)	275 (24.3)	209 (18.7)	194 (17.9)
PT	4 (0.2)	6 (0.4)	3 (0.3)	6 (0.5)	10 (0.9)
DC	16 (1.1)	16 (1.2)	8 (0.7)	8 (0.7)	12 (1.1)
MT	1 (0.1)	1 (0.1)	5 (0.4)	1 (0.1)	2 (0.2)
Other	0	4 (0.3)	2 (0.2)	1 (0.1)	0
Combinations of care
MD + PT	310 (21.8)	326 (23.8)	256 (22.6)	238 (21.3)	201 (18.6)
MD + DC	85 (5.9)	85 (6.2)	68 (5.9)	59 (5.3)	61 (5.7)
MD + MT	111 (7.8)	94 (6.9)	52 (4.6)	64 (5.7)	51 (4.7)
PT + DC	1 (0.1)	0	4 (0.4)	1 (0.1)	2 (0.2)
PT + MT	0	0	3 (0.3)	0	1 (0.1)
DC + MT	10 (0.7)	6 (0.4)	5 (0.4)	7 (0.6)	7 (0.6)
MD + PT + DC	176 (12.4)	58 (4.2	77 (6.8)	75 (6.7)	78 (7.2)
PT + DC + MT	2 (0.1)	1 (0.1)	1 (0.1)	2 (0.1)	0
Missing	22 (1.5)	48 (3.5)	187 (16.4)	77 (6.9)	80 (7.4)

NOTE. Values are presented as n (%).

Abbreviations: DC, chiropractor; MD, physician; MT, massage therapist; PT, physiotherapist.

∗ Denominator = everyone who completed at least 1 question at a follow-up.