Table 3. Summary of hierarchical regression outcomes between SBP responses, HR reactions, and CO reactions to mental arithmetic and HADS scores.

	β	T	R2	F	ΔR2	ΔF
SBP responses
Step 1			0.111*	2.022	0.111	2.022*
Age	0.040	0.408
Sex†	-0.165	-1.556
BMI	-0.005	-0.050
FH‡	0.238	2.426§
Smoking||	0.112	1.102
Baseline SBP	-0.045	-0.449
Step 2
Step 2.1			0.158	2.583§	0.047	5.400§
Anxiety	-0.229	-2.324§
Step 2.2			0.159	2.594§	0.048	5.468§
Depression	-0.227	-2.338§
HR reactions
Step 1			0.105	1.904	0.105	1.904*
Age	-0.130	-1.255
Sex†	0.184	1.730*
BMI	-0.088	-0.833
FH‡	0.126	1.277
Smoking||	-0.056	-0.546
Baseline HR	-0.235	-2.257§
Step 2			0.167	2.758§	0.062	7.161¶
Depression	-0.258	-2.676¶
CO reactions
Step 1			0.091	1.628	0.091	1.628
Age	-0.119	-1.184
Sex†	-0.020	-0.179
BMI	0.139	1.246
FH‡	-0.033	-0.332
Smoking||	0.007	0.069
Baseline CO	-0.320	-2.819¶
Step 2			0.194	3.302¶	0.103	12.214¶
Depression	-0.332	-3.495¶

BMI = body mass index; CO = cardiac output; FH = family history of cardiovascular disease; HR = heart rate; SBP = systolic blood pressure.

^*p < 0.1

^§p < 0.05

^¶p < 0.01.

^†Male = 1; female = 2.

^‡Positive = 1; negative = 0.

^||Current cigarette smoking status: smoking = 1; non-smoking = 0.