Table 1

Descriptive statistics of the analyzed T2DM and IR subset of the discovery TwinsUK cohort

CharacteristicsTwinsUK cohort (IR/T2DM subset)
Cases (IR/T2DM)Controls
Samples, n89 (52/47)445
Female participants, %100100
Age, mean±SD, years55.07±9.0155.06±8.95
BMI, mean±SD, kg/m228.15±4.7825.21±3.99
Follow-up period, mean±SD, years7.14±3.047.14±3.04
Systolic blood pressure, mean±SD, mm Hg125.73±16.95122.81±16.51
Diastolic blood pressure, mean±SD, mm Hg78.86±9.9176.80±10.12
Active smokers, n (%)6 (9.4)15 (5.3)
Non-smokers, n (%)39 (60.9)189 (66.3)
Ex-smokers, n (%)19 (29.7)81 (28.4)
  • Data on smoking status were available for 349 participants (65%).

  • BMI, body mass index; IR, insulin resistance; T2DM, type 2 diabetes mellitus.