. Author manuscript; available in PMC: 2011 May 1.

Published in final edited form as: Am J Prev Med. 2010 May;38(5):482–490. doi: 10.1016/j.amepre.2010.01.024

Table 2.

Utilization by treatment group

Characteristic	Web n=401	PTC n=402	PTC Web n=399	Overall comparison P-value
Behavioral treatment
Number of contacts, M (SD)	5.2^a (5.0)	4.1^b (1.7)	6.6^c (4.4)	<.0001
Contact duration in minutes, M (SD)	67.9^a (68.2)	67.5^a (29.9)	100.2 (62.6)	<.0001
Medication
Number of days varenicline taken, M (SD)	60.0^b (35.7)	67.7 (31.2)	61.5^b (32.7)	<.007
Number of pills taken (% “most” or “all”)	71.2^a	79.1^b	73.8^ab	ns

^{a, b}

Pairwise comparisons: means that have no superscript in common are significantly different from each other (Tukey’s Honestly Significant Difference, P<0.05), superscripts generated at http://www.jerrydallal.com/LHSP/similar_prog.htm

Number of contacts=Total completed phone calls+web logins

Contact duration=Total minutes spent on the phone or on the website