Identifying patients with diabetes and the earliest date of diagnosis in real time: an electronic health record case-finding algorithm

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; χ ² tests for race/ethnicity, male sex, and primary payer; Wilcoxon rank-sum test for encounters.

ISSN: 1472-6947