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. Author manuscript; available in PMC: 2015 Dec 7.
Published in final edited form as: Med Care. 2012 Jul;50(0):S30–S35. doi: 10.1097/MLR.0b013e318259c011

TABLE 1.

Sequential Identification and Select Characteristics of Prevalent Diabetes Cases Based on Qualifying Criteria From January 1, 2008 Through December 31, 2009 at 1 Participating DataLink Site

Population Characteristics* Case DefinitionsW
A B C D E F G
Outpatient Diagnosis Codes Inpatient Diagnosis Codes Only Outpatient and Inpatient Diagnosis Code Additional Pharmacy Claims Only Diagnosis Codes+Pharmacy Claims Laboratory Only All Claims+Laboratory Values (All Criteria)
Prevalence
 N (%) 12,916 (7.0) 111 (0.1) 13,027 (7.1) 140 (0.1) 13,167 (7.1) 422 (0.2) 13,589 (7.4)
Female (y) (%) 49.1   59.5   49.1   54.3   49.2   50.2   49.2  
 0–17 1.1   0.9   1.1   2.1   1.1   0.5   1.0  
 18–44 11.9   26.1   12.1   31.4   12.3   8.5   12.1  
 45–64 48.5   39.6   48.4   33.6   48.3   44.1   48.1  
 65–74 18.7   9.9   18.6   7.9   18.5   22.5   18.7  
 75+ 19.8   23.4   19.8   25.0   19.9   24.4   20.0  
Body mass index
 Mean (kg/m2) 32.58 33.63 32.59 31.48 32.57 30.53 32.50
 Z 30 kg/m2 (%) 40.5   36.0   40.5   47.1   40.5   54.7   41.0  
 Current smoker (%) 11.2   11.4   11.2   27.6   11.3   15.2   11.5  
HbA1c
 Mean 7.18 6.34 7.18 7.40 7.18 6.35 7.16
 < 8 (%) 80.8   90.9   80.9   75.9   80.8   98.0   81.3  
LDL-c (mg/dL)
 Mean 85.91 85.27 85.91 102.03 86.01 97.58 86.35
 < 100 (%) 73.5   70.6   73.5   50.8   73.3   55.8   72.8  
Systolic blood pressure (mm Hg)
 Mean 124.40 122.22 124.38 124.98 124.39 125.51 124.43
 < 130 (%) 71.1   72.0   71.1   65.8   71.0   59.2   70.6  
Diastolic blood pressure (mm Hg)
 Mean 70.78 70.99 70.78 72.17 70.79 72.11 70.84
 < 80 (%) 81.4   71.0   81.3   75.0   81.3   70.9   80.9  
*

Most recent values by December 31, 2009.

W

Qualifying case identification criteria: between January 1, 2008 and December 31, 2009, (a) at least 2 outpatient claims with diabetes diagnosis claims (ICD-9-CM codes 250.xx, 357.2, 366.41, 362.01–362.07) on separate days; (b) at least 1 inpatient claim with diabetes diagnosis (same ICD-9-CM codes); (c) at least 1 pharmacy claim for an antihyperglycemic medication except for metformin, thiazolidinedione, or exenatide; or (d) at least 2 elevated tests of HbA1c, fasting plasma glucose, random plasma glucose, or some combination of these and measured on separate days.