Table 1. Comparison of measured to set puff volumes recorded in the laboratory studies using three e-cigarette types.

Device	Pre-Set Puff Volume (mL)a
	55	80	120
Disposable	n = 267	n = 266	n = 234
	55.1 (0.2)	80.5 (0.3)	120.0 (1.1)
Rechargeable cartomiser-based	n = 434	n = 399	n = 423
	54.8 (0.2)	80.0 (0.3)	119.1 (0.6)
Rechargeable modular/Tank system	n = 450	n = 451	n = 452
	55.0 (0.8)	80.4 (1.2)	120.0 (1.2)

^aPresented as mean values (standard deviation).