. 2013 Jul 23;29(2):246–249. doi: 10.1007/s12291-013-0363-7

Table 3.

Showing NNAL distribution in types of tobacco smokers (paired t-test)

	Types of tobacco smokers	N	Mean	SD	Std. error mean	t	Sig. (2-tailed)
Total NNAL ×10⁻⁹ (mol/g creatinine)	Cigarette	6	1.1833	0.19755	0.08065	−3.410	0.009
Total NNAL ×10⁻⁹ (mol/g creatinine)	Beedi	4	1.6375	0.22021	0.11010	−3.410	0.009