Table 2

Baseline characteristics of subjects by patient group in the UK Biobank

DemographicsTotal (n=497 779)No DM and CVD (n=449 936)DM with HbA1c <7% (n=8207)DM with HbA1c 7%–7.9% (n=3556)DM with HbA1c 8%–8.9% (n=1429)DM with
HbA1c ≥9%
(n=999)
CVD only
(n=29 138)
CVD and DM
(n=4514)
Male, n (%)226 528 (45.5)195 869 (43.5)4884 (59.5)2115 (59.5)870 (60.9)631 (63.2)18 847 (64.7)3312 (73.4)
Caucasian, n (%)469 457 (94.31)425 526 (94.57)7174 (87.41)3083 (86.70)1194 (83.55)814 (81.48)27 727 (95.16)3939 (87.26)
Age, years, mean (SD)56.5 (8.1)56.1 (8.1)59.5 (7.3)59.7 (7.0)58.5 (7.2)56.4 (7.4)61.4 (6.4)62.0 (5.8)
Previous smoker, n (%)171 639 (34.5)149 961 (33.3)3390 (41.3)1472 (41.4)588 (41.1)361 (36.1)13 501 (46.3)2366 (52.4)
Current smoker, n (%)52 497 (10.5)46 632 (10.4)827 (10.1)363 (10.2)166 (11.6)121 (12.1)3826 (13.1)562 (12.5)
Charlson index, mean (SD)2.8 (1.6)2.7 (1.6)3.2 (1.7)3.2 (1.6)3.0 (1.6)2.8 (1.6)3.6 (1.7)3.8 (1.8)
Obesity, n (%)13 161 (2.6)9534 (2.1)690 (8.4)299 (8.4)140 (9.8)119 (11.9)1722 (5.9)657 (14.6)
Hyperlipidemia, n (%)105 830 (21.3)67 000 (14.9)6416 (78.2)3054 (85.9)1174 (82.2)796 (79.7)23 103 (79.3)4287 (95.0)
Hypertension, n (%)135 181 (27.2)105 026 (23.3)5272 (64.2)2244 (63.1)908 (63.5)605 (60.6)17 482 (60.0)3644 (80.7)
Atrial fibrillation, n (%)3720 (0.7)2587 (0.6)90 (1.1)30 (0.8)13 (0.9)12 (1.2)861 (3.0)127 (2.8)
Peripheral vascular disease, n (%)5556 (1.1)3960 (0.9)123 (1.5)49 (1.4)24 (1.7)11 (1.1)1101 (3.8)288 (6.4)
Amputation, n (%)10 (0.0)5 (0.0)2 (0.0)0 (0.0)0 (0.0)0 (0.0)2 (0.0)1 (0.0)
Dementia, n (%)253 (0.1)183 (0.0)5 (0.1)1 (0.0)0 (0.0)0 (0.0)55 (0.2)9 (0.2)
Chronic lung disease, n (%)65 070 (13.1)57 004 (12.7)1298 (15.8)538 (15.1)202 (14.1)151 (15.1)4974 (17.1)903 (20.0)
Connective tissue disease, n (%)369 (0.1)313 (0.1)8 (0.1)0 (0.0)1 (0.1)0 (0.0)43 (0.1)4 (0.1)
Peptic ulcer disease, n (%)12 663 (2.5)10 108 (2.2)293 (3.6)126 (3.5)50 (3.5)24 (2.4)1739 (6.0)323 (7.2)
Liver disease, n (%)4764 (1.0)3755 (0.8)212 (2.6)77 (2.2)44 (3.1)24 (2.4)469 (1.6)183 (4.1)
Chronic kidney disease, n (%)6613 (1.3)4420 (1.0)334 (4.1)148 (4.2)43 (3.0)37 (3.7)1252 (4.3)379 (8.4)
Hemiplegia, n (%)1031 (0.2)237 (0.1)7 (0.1)3 (0.1)1 (0.1)0 (0.0)674 (2.3)109 (2.4)
Cancer, n (%)67 944 (13.6)60 006 (13.3)1291 (15.7)502 (14.1)201 (14.1)124 (12.4)5012 (17.2)808 (17.9)
Townsend Deprivation Index, mean (SD)−1.31 (3.09)−1.38 (3.04)−0.57 (3.34)−0.58 (3.35)−0.36 (3.41)0.21 (3.60)−0.74 (3.35)0.07 (3.53)
DM duration, years, mean (SD)3.03 (4.37)NA2.48 (3.76)2.87 (4.58)2.94 (4.43)3.11 (4.57)NA4.18 (4.93)
Use of antidiabetic drugs, n (%)15 545 (3.1)NA6330 (77.1)3316 (93.3)1358 (95.0)965 (96.6)NA3576 (79.2)
  • The values are presented as mean (SD) or number (%), as appropriate.

  • CVD includes coronary heart disease, heart failure and stroke.

  • Other DM drugs are other antidiabetic drugs excluding insulin.

  • CVD, cardiovascular disease; DM, diabetes mellitus; HbA1c, hemoglobin A1c; NA, not applicable.