Table 2

Monthly mean values for cardiovascular disease risk factors adjusted for age and sex and estimated for age 50 and for meteorological data, the Tromsø Study 1979–2008

MonthSBP (mm Hg)DBP (mm Hg)HR (bpm)Weight (kg)Cholesterol (mmol/l)Triglycerides (mmol/l)HDL cholesterol (mmol/l)CRP (mg/l)Fibrinogen (g/l)Daily mean temp (°C)Min temp (°C)Max temp (°C)Sun hours (h)Snow depth (cm)
January135.883.172.672.56.171.451.592.243.20–3.6–12.65.0290
February135.883.273.472.26.081.441.532.423.35–3.5–12.64.632104
March136.382.772.872.86.021.511.492.543.35–2.2–11.15.8116110
April135.982.371.173.85.971.511.502.333.310.8–8.19.2155106
May135.481.971.273.75.911.471.482.503.375.0–2.615.820854
June133.181.670.874.85.771.441.452.433.239.31.621.32292
July* 12.05.123.62180
August134.281.670.771.95.961.471.532.513.2011.03.522.01680
September136.581.972.972.16.121.581.512.433.307.1–0.416.3962
October135.483.072.472.96.171.581.542.213.282.8–5.310.95123
November135.282.672.572.96.081.501.542.333.25–0.7–8.37.3742
December135.182.572.072.76.011.481.552.333.18–2.6–11.06.1061
  • * Results were not recorded in July due to summer holidays.

  • CPR, C reactive protein; DBP, diastolic blood pressure; HDL, high-density lipoprotein; HR, heart rate; max, maximum; min, minimum; SBP, systolic blood pressure; temp, temperature.