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Table 1 Participant characteristics depending on the total number of SLEs among 1,703 males

From: Association between stressful life events and resting heart rate

Variables Total number of SLEs p
0 (n = 1,418) 1 (n = 142) 2 (n = 64) ≥3 (n = 79)
Age, years 57.1≥8.8 60.6≥9.8 59.8≥9.1 56.9≥8.9 <0.001a
Body mass index, kg/m2 24.3≥2.9 24.4≥3.0 23.9≥2.8 24.1≥3.2 0.701a
Systolic BP, mmHg 122.0≥17.1 123.3≥16.2 120.0≥16.6 122.8≥16.4 0.616a
Diastolic BP, mmHg 77.7≥10.0 77.0≥9.6 76.5≥10.8 78.0≥10.7 0.687a
Heart rate, bpm 66.3≥10.5 64.4≥9.5 61.8≥7.9 64.2≥10.2 <0.001a
Heart rate on ECG, bpm 62.5≥10.3 60.2≥8.4 59.1≥8.3 61.0≥9.5 0.003a
PR interval on ECG, ms 172.9≥23.2 174.9≥21.6 174.8≥28.5 172.0≥23.8 0.700a
QRS duration on ECG, ms 94.5≥12.5 91.3≥19.0 92.5≥23.7 90.0≥17.4 0.005a
BUN to Cr ratio 15.4≥4.1 15.8≥4.4 15.5≥3.9 15.7≥4.7 0.558a
Hematocrit, % 44.4≥3.4 44.8≥4.3 44.2≥4.0 44.6≥3.8 0.532a
Total body water, kg 39.0≥6.4 40.6≥7.8 39.9≥6.9 39.4≥6.6 0.030a
Bradycardia 391 (27.6) 51 (35.9) 23 (35.9) 28 (35.4) 0.051b
Thyroid disease history 17 (1.2) 0 (0.0) 0 (0.0) 1 (1.3) 0.474c
Liver disease history 5 (0.4) 0 (0.0) 0 (0.0) 1 (1.3) 0.456c
Hypertension 498 (35.1) 62 (43.7) 23 (35.9) 30 (38.0) 0.238b
Hypertension treatment 325 (22.9) 43 (30.3) 16 (25.0) 16 (20.3) 0.217b
Regular exercise status 517 (36.5) 49 (34.5) 20 (31.3) 31 (39.2) 0.750b
Cigarette smoking      
 Never 452 (31.9) 36 (25.4) 22 (34.4) 29 (36.7) 0.006b
 Former 508 (35.8) 73 (51.4) 28 (43.8) 31 (39.2)  
 Current 458 (32.3) 33 (23.2) 14 (21.9) 19 (24.1)  
Alcohol drinking      
 Never 359 (25.3) 41 (28.9) 22 (34.4) 23 (29.1) 0.345b
 Former 163 (11.5) 22 (15.5) 8 (12.5) 8 (10.1)  
 Current 896 (63.2) 79 (55.6) 34 (53.1) 48 (60.8)  
  1. Data are expressed as the mean≥SD or the number (%).
  2. ap-value was calculated by an ANOVA between groups.
  3. bp-value was calculated by a Chi-square test between groups.
  4. cp-value was calculated by a Fisher’s exact test between groups.