Table 1

Distribution of Age, Gender Index LBP Diagnostic Category, and RxRisk Comorbidty Category by LBP Episodes for 16,567 Patients Identified with LPB

Number of LBP Episodes

1 (11,161)
 2 (2887)
 3–5 (1776)
 6+ (743)
 All (16,567)
 Chi-Sq P-value
(N)
 %
 %
 %
 %
 %
Age at First Back Pain
18–24 (752)
 5.2
 4.1
 2.9
 1.1
 4.5
25–34 (1760)
 11.3
 10.1
 8.8
 7.3
 10.6
35–44 (3668)
 23.4
 21.0
 17.8
 18.6
 22.2
45–54 (4116)
 24.6
 24.0
 27.0
 27.1
 24.8
55–64 (2759)
 16.3
 17.0
 18.2
 17.4
 16.7
65–74 (2221)
 12.2
 15.2
 16.0
 18.7
 13.4
75–84 (1051)
 5.8
 7.2
 7.6
 8.8
 6.3
85+ (240)
 1.4
 1.5
 2.0
 1.2
 1.5
 <.0001







Male (7679)
 46.9
 45.6
 45.4
 43.3
 46.4
 0.087







Index Diagnosis Category
I (13,416)
 84.0
 81.2
 72.0
 56.7
 81.0
II (1,592)
 8.6
 9.6
 14.5
 12.7
 9.6
III: (1,114)
 5.7
 7.1
 10.6
 26.2
 6.9
IV: (445)
 2.7
 2.2
 2.9
 4.6
 2.5
 <.0001







Prevalence Of RxRisk Comorbidity*
Anxiety (2026)
 10.8
 14.9
 15.8
 15.5
 12.2
 <.0001
Asthma/COPD (1978)
 11.2
 13.1
 14.1
 14.4
 12.0
 <.0001
Cardiac Disease (1134)
 6.4
 7.3
 8.3
 9.0
 6.8
 0.0005
CVD/PVD (495)
 2.8
 3.4
 3.2
 3.9
 3.0
 0.10
Depression (2227)
 12.3
 14.5
 16.6
 18.6
 13.4
 <.0001
Diabetes (854)
 4.8
 5.8
 6.5
 5.1
 5.2
 0.004
GI Disease (2100)
 12.5
 13.6
 16.2
 18.6
 12.7
 <.0001
HD/Hyperten (2327)
 13.1
 15.5
 16.6
 16.7
 14.0
 <.0001
Hyperlipidemia (1035)
 5.7
 6.8
 7.1
 10.0
 6.2
 <.0001
Hypertension (3212)
 17.6
 21.0
 26.1
 24.4
 19.4
 <.0001
Inflammation (2598)
 14.0
 18.3
 20.6
 18.6
 15.6
 <.0001
Psychosis (398)
 2.2
 2.6
 3.0
 3.1
 2.4
 0.073
Rheum Arthritis (732)
 3.9
 5.4
 5.6
 5.7
 4.4
 <.0001
Thyroid Disease (1301)
 7.4
 8.3
 8.9
 10.2
 7.9
 0.003

*Comorbidity abbreviations:

COPD = Chronic Obstructive Lung Disease

GI = Gastrointestial

HD/Hyperten = Heart Disease/Hypertension

Rheum= Rheumatiod

Ritzwoller et al. BMC Musculoskeletal Disorders 2006 7:72   doi:10.1186/1471-2474-7-72