Table 2

Stress test summary

VariableTotal (N=648)Female (n=334)Male (n=314)
Resting SBP (mm Hg)101.2 (10.0)101.1 (10.3)101.4 (9.8)
Resting SBP percentile38.5 (26.6)38.0 (27.1)35.1 (23.5)
Peak SBP (mm Hg)144.3 (18.2)143.5 (16.7)145.2 (19.6)
Change in SBP (mm Hg)43.1 (14.6)42.4 (13.9)43.8 (15.3)
Resting DBP (mm Hg)58.9 (7.6)59.2 (7.9)58.7 (7.3)
Resting DBP percentile39.7 (23.6)38.3 (23.3)37.9 (20.1)
Resting HR (beats/min)83.1 (15.6)84.2 (15.5)81.9 (15.5)
Peak HR (beats/min)195.0 (9.4)195.2 (9.0)194.7 (9.7)
Percentage of predicted maximum HR93.9 (4.7)94.1 (4.6)93.7 (4.9)
Test duration12.6 (2.2)12.0 (1.9)13.3 (2.4)*
Stage of Bruce protocol reached
 21 (0%)0 (0%)1 (0%)
 316 (2%)11 (3%)5 (2%)
 4228 (35%)149 (45%)79 (25%)
 5303 (47%)150 (45%)153 (49%)
 690 (14%)22 (7%)68 (22%)
 710 (2%)2 (1%)8 (3%)
Reason for termination
 Adequate or complete time reached9 (1%)3 (1%)6 (2%)
 Chest pain/dizziness/collapse54 (8%)42 (13%)12 (4%)
 Fatigue/shortness of breath/sore body (chest)/anxiety/distress/poor treadmill coordination575 (89%)282 (84%)293 (93%)
 Other4 (1%)1 (0%)3 (1%)
 Sudden collapse2 (0%)2 (1%)0 (0%)
 Unknown4 (1%)4 (1%)0 (0%)
  • Data presented as mean (SD) or N (%).

  • *P< 0.001 compared with females.

  • DBP, diastolic blood pressure; HR, heart rate; SBP, systolic blood pressure.