Table 2

Baseline cohort characteristics for the electronic diabetes case-finding model*
Characteristics Derivation Validation P-value**
n 1417 341
Age, mean years (SD) 49.3 (14.4) 45.0 (14.6) <.001
Race/ethnicity,% .83
   Hispanic 44 40
   White 23 24
   Black 25 27
   Other 9 9
Male,% 47 52 .13
Primary payer,% .15
   Commercial 18 16
   Medicare 9 6
   Medicaid 13 13
   Self-pay 30 29
   Charity 30 36
Encounters, mean no. (SD)
   All 7.86 (9.03) 6.65 (9.06) .01
   Primary care 2.25 (3.90) 1.99 (3.60) .45
   Specialty care 4.31 (6.86) 3.62 (7.08) .02
   Urgent care and ED 0.81 (2.58) 0.61 (0.89) .48
   Inpatient 0.49 (0.97) 0.43 (0.88) .25

*Derivation and validation cohorts defined as per Figure 1.

**Student t-test for age; χ2 tests for race/ethnicity, male sex, and primary payer; Wilcoxon rank-sum test for encounters.

Makam et al.

Makam et al. BMC Medical Informatics and Decision Making 2013 13:81   doi:10.1186/1472-6947-13-81

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