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Table 5 Annualized Total Cost Weight Least Squares Regression Model N= 16,547 Adjusted R2 = 0.3163

From: The association of comorbidities, utilization and costs for patients identified with low back pain

Variable Label Parameter Estimate Standard Error P-Value
Intercept -1241.14 119.66 <.0001
Male -294.21 50.95 <.0001
Age 25 – 34 -164.83 137.67 0.23
Age 35 – 44 -109.54 126.44 0.81
Age 45 – 54 30.81 132.77 0.02
Age 55 – 64 302.04 132.77 <.0001
Age 65 – 74 1203.64 138.42 <.0001
Age 75 – 85 1936.07 156.66 <.0001
Age > 85 1800.55 238.81 <.0001
Diagnosis Category II 120.44 83.86 0.15
Diagnosis Category III 156.54 99.26 0.11
Diagnosis Category IV 2001.02 152.28 <.0001
Anxiety 827.58 79.58 <.0001
Psychotic Illness 1571.03 162.47 <.0001
Depression 1430.44 76.67 <.0001
Asthma/COPD 660.79 79.00 <.0001
Diabetes 2937.67 114.06 <.0001
GI Disorder 1013.77 76.72 <.0001
HD/Hypertension 1339.12 63.83 <.0001
Rheumatoid Arthritis 1625.42 124.42 <.0001
Thyroid Disorder 250.62 94.15 0.007
Opiate dispense 911.93 64.47 <.0001
NSAID dispense 524.73 59.74 <.0001
  1. *Reference Categories include in the intercept parameter estimate were Female, Age 18–25, and Diagnosis Category I.