Table 3.

Economic evaluation of the SSP intervention.

	ECONOMIC EVALUATION	CRITERIA
Invested capital	€ 13,200.00	Per capita cost of the training course: € 330,00
Gross profit	€ 38,134.25	Weighted sum of the per capita recovered time in a year, considering the mean cost of a working day: € 169,80 and the mean time of six minutes per cigarette
Net profit	€ 24,934.25	Difference between the gross profit and the invested capital
ROI	1.90	Ratio between the net profit and the invested capital (considering the one-year period)
Pre-SSP situation	€ 1,682.45	Mean hours lost for smoking during work shifts
Post-SSP situation	€ 0.00	Recovered mean hours (from non-smokers)
BEP	7.85	The number of participants who quit smoking at which the costs of the SSP program would equal the profit