Table 3. Gender stratified multiple regression analysis of T-cell p-p38 by age, smoking status (shown), geographic groups and BMI.

	Men				Women				Interaction
	n	β	95% CI	p	n	β	95% CI	p	p
Non-smoker	111	ref			97	ref
Smoker	62	97	(30, 163)	0.005	31	23	(−79, 124)	0.66	0.22

Coefficients (β), 95% confidence intervals (95% CI) and significance (p) from the regression analyses are listed. Test for interactions between smoking and gender in unstratified model in far right column.