Table 2.

Stress test summary

Variable	Total (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 percentile	38.5 (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 percentile	39.7 (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 HR	93.9 (4.7)	94.1 (4.6)	93.7 (4.9)
Test duration	12.6 (2.2)	12.0 (1.9)	13.3 (2.4)*
Stage of Bruce protocol reached
2	1 (0%)	0 (0%)	1 (0%)
3	16 (2%)	11 (3%)	5 (2%)
4	228 (35%)	149 (45%)	79 (25%)
5	303 (47%)	150 (45%)	153 (49%)
6	90 (14%)	22 (7%)	68 (22%)
7	10 (2%)	2 (1%)	8 (3%)
Reason for termination
Adequate or complete time reached	9 (1%)	3 (1%)	6 (2%)
Chest pain/dizziness/collapse	54 (8%)	42 (13%)	12 (4%)
Fatigue/shortness of breath/sore body (chest)/anxiety/distress/poor treadmill coordination	575 (89%)	282 (84%)	293 (93%)
Other	4 (1%)	1 (0%)	3 (1%)
Sudden collapse	2 (0%)	2 (1%)	0 (0%)
Unknown	4 (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.