Variables

Values (Mean SD)

T- Test

P- Value

Elderly

Young

Heart rate (beat/min)

67.76 (13.74)

68.98 (4.24)

6.327

< 0.001^*

P-wave duration (msec)

117.42 (14.48)

90.30 (14.84)

10.463

< 0.0001^*

P-wave dispersion (msec)

58.18 (22.94)

34.7 (17.41)

6.488

< 0.0001^*

PR-interval

(msec)

175.53 (26.70)

161.3 (27.13)

2.990

< 0.0001^*

QRS duration

(msec)

84.08 (15.19)

81.5 (15.82)

0.941

0.3484

QRS dispersion

(msec)

45.45 (18.02)

33.3 (14.57)

4.325

< 0.0001^*

QTc-interval

(msec)

411.91 (31.13)

393.5 (21.46)

3.872

< 0.0002^*

QTc-dispersion

66.64 (11.61)

47.8 (21.23)

6.280

< 0.0001^*