Table 2.

Summary of NNN from moist smokeless tobacco products in referenced studies.

	Borgerding	Richter	Stepanov 2008	Ammann	Stepanov 2013	Song
Mean (μg/g, dry weight)	5.1	14.5	4.4	3.4	4.9	4.5
Stdev (μg/g, dry weight)	2.3	14.3	1.9	2.0	1.9	1.0
Min (μg/g, dry weight)	3.1	4.4	1.7	1.03	2.8	NA
Max (μg/g, dry weight)	12.7	91.1	6.9	9.5	8.9	NA
Number of MST products	19	39	5	18	14	7

Values in [15], [17], [14], [18], [16], [13].