Table 4

Distribution of the ten most frequent problems managed, as reported by chiropractors, for patients aged ≥65 and < 65 years at the patient encounter level

	≥65 years patient encounters (n = 1067)				< 65 years patient encounters (n = 5714)
	% of diagnoses (n)	Rate per 100 encounters	95% CI		% of diagnoses (n)	Rate per 100 encounters	95% CI
Back problem	55.7 (863)	82.4	72.7–93.2	Back problem	52.1 (4249)	75.3	67.7–83.8
Neck problem	10.1 (157)	15.0	10.9–20.5	Neck problem	13.7 (1119)	19.8	16.6–23.8
Back syndrome with radiating pain	5.4 (83)	7.9	5.1–12.2	Muscle problem	5.2 (428)	7.6	5.2–11.0
Muscle problem	4.1 (63)	6.0	3.9–9.3	Back syndrome with radiating pain	4.7 (387)	6.9	5.0–9.4
Shoulder problem	4.0 (62)	5.9	4.1–8.6	Headache	2.7 (224)	4.0	3.0–5.3
Osteoarthritis (not spine)	3.8 (59)	5.6	4.0–8.0	Shoulder problem	2.5 (200)	3.6	2.8–4.5
Health maintenance	1.7 (26)	2.5	1.2–5.3	Other musculoskeletal problem	2.3 (191)	3.4	1.6–7.1
Knee problem	1.4 (21)	2.0	1.0–4.1	Health maintenance	2.2 (179)	3.2	1.8–5.7
Foot problem	1.2 (19)	1.81	1.0–3.3	Foot problem	1.6 (130)	2.3	1.5–3.6
Hip problem	1.2 (19)	1.8	1.1–3.1	Knee problem	1.1 (86)	1.5	1.1–2.2

CI Confidence interval