Table IV.

Correlation of urinary cotinine level of smokeless tobacco chewers (STC, n=300) with autonomic function test

Autonomic function test	Correlation coefficient (r)	95% CI for mean	P
SBP	0.012	−0.104 to 0.129	0.827
DBP	0.056	−0.060 to 0.172	0.329
SBP fall	0.138	0.022 to 0.251	0.016
DBP rise	−0.141	−0.253 to −0.024	0.014
HR response to deep standing	−0.208	−0.317 to 0.094	<0.003
HR response to deep breathing	−0.473	−0.559 to 0.377	<0.001
HR response to Valsalva ratio	−0.396	−0.490 to −0.293	<0.001

HR, heart rate; CI, confidence interval; SBP, systolic blood pressure; DBP, diastolic blood pressure