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. Author manuscript; available in PMC: 2016 Jun 1.

Published in final edited form as: J Behav Ther Exp Psychiatry. 2014 Nov 15;47:68–76. doi: 10.1016/j.jbtep.2014.10.013

Table 2.

Zero-order Correlations between CO2 Hypersensitivity Markers.

	1	2	3	4	5	6	7	8	9	10
1. SUDS Mean Bsln	-----	.59^**	.68^**	.37^**	.59^**	.25^**	.126^*	0.02	−0.02	−0.03
2. SUD Mean CO₂		-----	.68^**	.36^**	.45^**	.58^**	.32^**	0.08	.18^**	0.07
3. SUDS Mean Rec			-----	.28^**	.48^**	.42^**	.35^**	0.06	0.10	0.04
4. DSQ No Facemask Bsln				-----	.47^**	.33^**	.26^**	0.01	0.08	−0.05
5. DSQ Facemask Bsln					-----	.44^**	.36^**	0.04	0.03	0.04
6. DSQ CO₂						-----	.48^**	0.04	.22^**	0.10
7. DSQ Rec							-----	0.02	0.09	0.01
8. RR Mean Bsln								-----	.35^**	.35^**
9. RR Mean CO₂									-----	.53^**
10. RR Mean Rec										-----

Note: Bsln=Baseline; CO2=CO2 breathing phase; Rec=Recovery Phase; SUDS=Subjective units of distress.

^**

p<0.01

^*

p<0.05.