. Author manuscript; available in PMC: 2018 Jan 1.

Published in final edited form as: J Endod. 2016 Dec 6;43(1):84–89. doi: 10.1016/j.joen.2016.10.006

Table 1.

Study participant demographics. Mann-Whitney U test was used to compare age and McNemar's Chi-square test was used to compare gender distribution between the two groups. Age is presented as mean ± standard deviation. Pain history is defined as patients’ report of spontaneous and/or thermally evoked pain in the past 14 days.

Variables	Normal pulp (n=12)	Diseased pulp (n=18)	p value
Mean Age (StdDev)	37 (14.42)	18 (3.00)	<.0001
Gender
Female	5 (42%)	10 (56%)	0.71
Male	7 (48%)	8 (44%)	0.71
Pain History	0%	6 (30%)