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Table 5 Hemoglobin A1c levels and utilization outcomes by self-report and chronic condition warehouse diabetes status

From: Identifying diabetics in Medicare claims and survey data: implications for health services research

  Self-report, yes; Claims, yes Self-report, yes; Claims, no Self-report, no; Claims, yes Self-report, no; Claims, no
Healthcare Utilization (2006) A1c < 6.5 A1c > 6.5 A1c < 6.5 A1c > 6.5 A1c < 6.5 A1c > 6.5 A1c < 6.5 A1c > 6.5
Total reimbursement 9400.7 (1079.6) 8770.8 (1030.8) 3275.4 (1493.9) 11823.0 (8682.9) 9383.8 (1406.3) 8613.2 (2734.9) 4731.2 (320.9) 3507.0 (803.4)
Total hospitalizations 0.39 (0.05) 0.36 (0.06) 0.19 (0.10) 0.32 (0.17) 0.34 (0.06) 0.47 (0.14) 0.23 (0.02) 0.15 (0.07)
Total office visits 10.29 (0.71) 10.01 (0.52) 5.22 (1.53) 1.59 (0.41) 10.93 (0.90) 10.27 (1.86) 6.62 (0.23) 6.27 (0.73)
Total A1c tests (2002–2005) 4.67 (0.29) 4.86 (0.42) 0.48 (0.26) 0.77 (0.77) 0.78 (0.13) 2.16 (0.54) 0.09 (0.01) 0.26 (0.15)
Sample size 225 181 21 13 141 21 1377 49
  1. Parenthetical entries are standard errors.
  2. Source: 2006 Health and Retirement Study; 2006 Medicare Beneficiary Annual Summary File.