Prevalence of claims-based recurrent low back pain in a Canadian population: A secondary analysis of an administrative database

Table 1 Comparison of claims-based recurrent LBP prevalence by age category and sex between 2000 and 2007

Age / Year	2000	[99% CI]	2007	[99% CI]	% Var¹	Slope²
18-34
Male	1.13	[1.10 – 1.16]	0.70	[0.68 – 0.73]	−38	−0.061
Female	0.89	[0.87 – 0.92]	0.64	[0.62 – 0.66]	−28	−0.033
35-49
Male	2.05	[2.01 – 2.09]	1.63	[1.59 – 1.66]	−21	−0.062
Female	1.65	[1.62 – 1.69]	1.45	[1.41 – 1.48]	−12	−0.027
50-64
Male	1.93	[1.89 – 1.98]	1.68	[1.64 – 1.72]	−13	−0.032
Female	1.78	[1.73 – 1.82]	1.55	[1.52 – 1.59]	−13	−0.028
65-80
Male	1.36	[1.31 – 1.41]	1.33	[1.29 – 1.38]	−2	−0.001
Female	1.72	[1.67 – 1.78]	1.79	[1.74 – 1.84]	+4	+0.016
80 +
Male	1.29	[1.18 – 1.41]	1.35	[1.26 – 1.45]	+5	+0.004
Female	1.58	[1.50 – 1.67]	1.83	[1.75 – 1.91]	+16	+0.005

[1] % Var: percentage of variation between 2000 and 2007.
[2] Slope values are based on the linear regressions of the prevalence for every age category for years 2000 to 2007.

ISSN: 1471-2474