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. 2019 Jun 14;9(6):e027791. doi: 10.1136/bmjopen-2018-027791

Table 1.

Sample characteristics stratified by sex, ethnicity and survey, given in mean (SD) or n (%)

Women Sami participants Non-Sami participants
SAMINOR 1 SAMINOR 2 SAMINOR 1 SAMINOR 2
n=1150 n=1283 n=2176 n=1899
Age (years) 55.5 (10.2) 58.5 (10.4) 56.5 (10.1) 59.1 (10.7)
Education (years) 10.8 (4.7) 12.5 (4.4) 10.9 (3.8) 12.3 (4.0)
Waist circumference (cm) 86.5 (12.0) 93.6 (12.1) 85.6 (12.0) 92.9 (12.0)
Systolic BP (mm Hg) 130.6 (21.6) 130.0 (19.3) 133.0 (20.1) 131.1 (18.6)
Diastolic BP (mm Hg) 72.7 (10.3) 71.7 (9.2) 73.0 (10.5) 72.3 (9.0)
Triglycerides (mmol/L)* 1.36 (0.98) 1.40 (0.90) 1.35 (0.92) 1.40 (0.90)
Glucose (mmol/L)* 5.29 (1.07) 5.30 (1.10) 5.29 (1.09) 5.20 (1.00)
HDL cholesterol (mmol/L) 1.45 (0.37) 1.45 (0.41) 1.49 (0.40) 1.55 (0.45)
Self-reported diabetes mellitus 53 (4.8) 104 (8.3) 113 (5.6) 156 (8.5)
Current use of BP medication 270 (23.8) 352 (28.5) 556 (26.0) 550 (30.0)
Men n=1118 n=1113 n=1864 n=1571
Age (years) 56.3 (10.1) 59.8 (10.3) 56.4 (9.8) 60.3 (10.2)
Education (years) 10.3 (4.1) 11.4 (3.8) 10.9 (3.7) 11.8 (3.6)
Waist circumference (cm) 92.5 (10.6) 98.6 (10.6) 93.9 (10.2) 100.2 (10.7)
Systolic BP (mm Hg) 135.4 (20.0) 134.6 (18.0) 136.1 (17.6) 135.1 (17.2)
Diastolic BP (mm Hg) 78.3 (10.0) 77.0 (9.9) 78.2 (10.0) 77.8 (9.4)
Triglycerides (mmol/L)* 1.55 (1.27) 1.70 (1.20) 1.58 (1.14) 1.50 (1.10)
Glucose (mmol/L)* 5.42 (1.02) 5.40 (1.10) 5.41 (1.15) 5.40 (1.10)
HDL cholesterol (mmol/L) 1.27 (0.36) 1.23 (0.38) 1.28 (0.34) 1.28 (0.38)
Self-reported diabetes mellitus 48 (4.5) 107 (9.8) 75 (4.3) 146 (9.4)
Current use of BP medication 236 (21.5) 308 (29.0) 408 (22.3) 483 (31.9)

The SAMINOR 1 Survey (2003–2004, n = 6308) and the SAMINOR 2 Clinical Survey (2012–2014, n = 5866).

All blood samples are non-fasting. Continuous variables are given as mean (SD) unless otherwise indicated. Categorical variables are given as n (%). For some variables, the total adds up to a lower number due to missing data. The maximum number missing (n=419) was for ‘education’ in SAMINOR 1.

*Median (IQR) due to right-skewed data.

BP, blood pressure; HDL, high-density lipoprotein.