Age Daily
consumption 		Time of
consumption 		HMI score
Age r 1 0.129 0.897 0.323
P - 0.289 0.000a,b 0.007a,b
Daily
consumption 		r 0.129 1 0.166 0.396
P 0.289 - 0.174 0.001a,b
Time of
consumption 		r 0.897 0.166 1 0.427
P 0.000 0.174 - 0.000a,b
HMI score r 0.323 0.396 0.427 1
P 0.007a,b 0.001a,b 0.000a,b -

aStatistically significant at level P < 0.05 (Spearmen's correlation test).
bStatistically significant at level P < 0.01 (Spearmen's correlation test).
HMI = Hedin's melanin index; CS = current smokers.