Table 3.

Comparison of smoking topography measures (on a per-cigarette basis) between smokers of “King” sized machine-injected roll-your-own and factory made cigarettes, Pennsylvania Adult Smoking Study 2012–2014

	Make-your own- cigarette smokers n=58	Factory made cigarette smokers n=131	P-Value
Total number of cigarette puffs	12.1 (0.3)	12.1 (0.2)	0.867
Mean puff volume (mL)	49.5 (1.0)	49.0 (0.7)	0.684
Total puff volume (mL)	595.9 (13.3)	580.4 (10.1)	0.354
Mean interpuff interval (s)	26.6 (0.6)	24.8 (0.5)	0.018
Mean puff duration (s)	1.6 (0.03)	1.6 (0.02)	0.110
Mean puff flow (mL/s)	33.4 (0.6)	34.5 (0.5)	0.146
Total smoking duration (s)	311.4 (5.3)	289.3 (4.1)	0.001

All values are mean (standard deviation).