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Table 1 Patient Characteristics in 1996 by cohort status (n = 4944).

From: Changes in glycemic control from 1996 to 2006 among adults with type 2 diabetes: a longitudinal cohort study

 

All Patients

Characteristics by cohort

 

(n = 4944)

2006 Cohort (n = 1772, 35.8%)

Lost to F/U (n = 1296 26.2%)

Died (n = 1876, 37.9%)

P-value

Age, years (SD)

60.0 (16.9)

58.8 (12.4)

59.7 (11.5)

70.6 (10.7)

<0.001

Women

47.9%

49.7%

50.2%

44.5%

0. 001

Non-White race/ethnicity

23.4%

21.7%

35.7%

16.4%

<0.001

Non-English Language

12.3%

10.2%

18.3%

10.2%

<0.001

Mean HbA1c % (SD)

8.3 (1.8)

8.2 (1.7)

8.4 (1.9)

8.3 (1.8)

0.008

Mean # of HbA1c tests (SD)

2.0 (1.1)

2.1 (1.1)

1.8 (1.1)

1.9 (1.1)

<0.001

Mean # of encounters (SD)

13.5 (11.8)

12.2 (10.7)

11.0 (10.4)

16.4 (13.9)

<0.001

  1. "2006 cohort" = patients with HbA1c results in both 1996 and 2006; "Lost to F/U" = patients who were lost to follow-up prior to 2006; "Died" = patients who died prior to 2006; SD = Standard Deviation
  2. P-values compare 2006 cohort (n = 1772) to lost-to-follow up cohort (n = 1549) to Died cohort (n = 1902)
  3. Mean HbA1c and number of tests and outpatient encounters were those during the calendar year 1996.