Table 1 Seasonal variations of general characteristics among staff members working in forest environment (N = 72)

From: Health effects of seasonal variation in cardiovascular hemodynamics among workers in forest environments

Variables

Seasons

P-value

Winter Jan, 2014

Summer Jun, 2014

Age (years)

46.0 ± 10.19

46.01 ± 1 0.20

─

Male sex (%)

68.5

68.5

─

BMI (kg/m2)

24.7 ± 3.6

24.3 ± 3.5

0.0317

Waist circumference (cm)

84.6 ± 9.0

82.3 ± 10.0

<0.0001

Temperature (°C)

13.1 ± 0.5

21.5 ± 0.6

<0.0001

Relative humidity (%)

91.4 ± 3.0

91.0 ± 4.2

0.5339

Smoking habit (%)

34.25

28.77

0.4761

Alcohol drinking habit (%)

41.1

31.51

0.2283

Exercise habit (%)

32.88

34.25

0.8609

Hypertension (%)

47.95

24.66

0.0034

Anti-hypertensive medication (%)

19.35

19.35

─

Hypercholesterolemia (%)

34.25

23.29

0.1436

  1. P-value is paired t-test of significance between winter and summer
  2. Smoking habit current smoker and ex-smoker, Alcohol drinking habit
  3. alcohol drinking at least once per week, Exercise habit exercise at least three times per week and 30 min each time
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