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Table 3 Comparison of the clinical vital signs among the three study groups (N = 105)

From: A comparison of electrocardiographic parameters in e-cigarette users, conventional cigarette smokers, and non-smokers

Vital signs (mean ± SD)

Group 1 (n = 35)

Group 2 (n = 35)

Group 3 (n = 35)

p value between the three groups

p value between males and females

p value between group 1 and group 2

F test

Heart rate (bpm)

 Total

71.7 ± 9.2

73.4 ± 5.2

64.2 ± 3.4

 < 0.001*$

0.54

0.26#

11.75

 Males

68.4 ± 6.5

73.5 ± 4.7

64.5 ± 3.6

 Females

76 ± 10.7

73.2 ± 5.9

63.9 ± 3.01

Systolic blood pressure (mmHg)

 - Total

115.7 ± 5.4

114.9 ± 5.6

114.3 ± 5.2

0.537$

0.96

0.55#

71.4

 - Males

114.5 ± 5.1

118.8 ± 9.5

114.7 ± 5.1

 - Females

114.7 ± 5.2

115.6 ± 9.6

113.8 ± 5.01

Diastolic blood pressure (mmHg)

 - Total

75.4 ± 9.2

78.8 ± 8.9

70.6 ± 8.8

0.736$

0.78

0.84#

0.5

 - Males

78.5 ± 5.4

79.5 ± 9.1

70 ± 9.7

 - Females

69.3 ± 7.3

71.9 ± 8.5

67.2 ± 5.4

Body mass index (BMI)

 - Total

23.6 ± 1.9

22.6 ± 2

25.02 ± 1.1

0.9$

0.85

0.7#

12.29

 - Males

23.4 ± 2.1

22.3 ± 2

23.4 ± 2.4

 - Females

23 ± 1.6

22.9 ± 1.9

23.9 ± 1.4

Oxygen saturation (SpO2)

 - Total

97.91 ± 0.3

97.75 ± 0.5

98.12 ± 0.15

0.09$

0.06

0.8#

4.63

 - Males

97.82 ± 0.45

97.42 ± 0.57

98.92 ± 0.27

 - Females

97.96 ± 0.18

97.67 ± 0.36

99.11 ± 0.12

  1. Group 1: Electronic cigarette smokers
  2. Group 2: Conventional cigarette smokers
  3. Group 3: Non-smokers control group
  4. *Statistically significant at p value < 0.05
  5. $One-way Anova
  6. #LSD post-hoc test