Table 1

Subject descriptive characteristics by type 2 diabetes status
Variables Diabetes (N = 11,236) No diabetes (N = 54,365)
N (%) N (%)
Gender
Male 5813 (51.7) 28019 (51.5)
Female 5423 (48.3) 26346 (48.5)
Mean age (years) (IQR) 62.9 (53–73) 63.2 (53–72)
Age group
30–49 years 1940 (17.3) 9760 (18.0)
50–59 years 2681 (23.9) 12832 (23.6)
60–69 years 3110 (27.7) 14294 (26.3)
70–79 years 2409 (21.4) 10711 (19.7)
≥80 years 1096 (9.8) 6768 (12.4)
Smoking status
Ever 7579 (67.5) 36427 (67.0)
Never 3657 (32.5) 17938 (33.0)
Diabetes diagnosis period
1995–1999 2486 (22.1) 12123 (22.3)
2000–2004 4657 (41.4) 22581 (41.5)
2005–2009 4093 (36.4) 19661 (36.2)
MESA residency
No 9036 (80.4) 43871 (80.7)
Yes 2200 (19.6) 10494 (19.3)
Mean BMI (kg/m2) (IQR) 33.4 (28–37) 28.9 (26–39)
Have insurance 8881 (79.0) 40852 (75.1)
Visit frequency during 2 years before diabetes
0-5 2285 (20.3) 15848 (29.2)
6-10 2367 (21.1) 13093 (24.1)
11-20 3146 (28.0) 1411 (26.0)
>20 3438 (30.6) 11308 (20.8)
Visit frequency during 2 years after diabetes
0-5 1175 (10.5) 21396 (39.4)
6-10 1523 (13.6) 10286 (18.9)
11-20 3223 (28.7) 11492 (21.1)
>20 5315 (47.3) 11191 (20.6)
Mean observation time (IQR)
Years Before Diabetes onset 16.6 (6.1–26.1) 16.3 (5.7–26.2)
Years After Diabetes onset 7.4 (4.4–10.0) 6.1 (2.8–8.8)
Comorbidities
Myocardial infarction 208 (1.9) 609 (1.1)
Coronary heart disease 590 (5.3) 1380 (2.5)
Peripheral vascular disease 272 (2.4) 984 (1.8)
Cardiovascular disease 351 (3.1) 1290 (2.4)
Chronic pulmonary disease 1069 (9.5) 3106 (5.7)
Rheumatic heart disease 200 (1.8) 999 (1.8)
Renal disease 207 (1.8) 713 (1.3)
Cancer
Breast1 543 (10.0) 2282 (8.7)
Colon
Men2 173 (3.0) 642 (2.3)
Women1 129 (2.4) 548 (2.1)
Prostate2 600 (10.3) 2832 (10.1)

IQR, interquartile range; MESA, Marshfield Epidemiologic Study Area; BMI, body mass index.

1Women only, N = 5,423 with diabetes and 26,346 without diabetes.

2Men only, N = 5,813 with diabetes and 28,019 without diabetes.

Onitilo et al.

Onitilo et al. BMC Medical Informatics and Decision Making 2014 14:38   doi:10.1186/1472-6947-14-38

Open Data