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. Author manuscript; available in PMC: 2009 Jul 1.
Published in final edited form as: Arthritis Rheum. 2008 Aug;58(8):2236–2240. doi: 10.1002/art.23731

Table 2. Adjusted Total Out-of-Pocket and Out-of-Pocket Expenditures for Prescription Drugs 1998 Vs. 2004 for Adults with Arthritis Age 65 or Older.

(Expenditures in 2004 Dollars adjusted for age, gender, marital status education, income)

1998 2004 Difference
[95% CI]
Panel A: Out-of-Pocket Expenditures for Prescription Drugs
Median 415 714 299
[200,435]
75th Percentile 906 1,482 576
[347,791]
90th Percentile 1,602 2,830 1,227
[523,1638]

Panel B: Total Out-of-Pocket Expenditures
Median 757 1,154 397
[256,581]
75th Percentile 1,334 2,014 681
[419,1,080]
90th Percentile 2,452 4,196 1,743
[855,2,396]

Note: Bootstrapped Confidence Interval in squared brackets. Reference group: white, female, age 75, not married, in good health, 12 years education, mean income ($23,585 in 2004 dollars) with one other chronic condition.