Effects of Smoking on Aggression, Big Five Personality Factors, and Polymorphisms in HTR2A, DRD4, and MAOA among Egypt University Students

Table 2

Genotypes in the 3 groups.

Genotypes	NS ()	LS ()	HS ()
DRD4 rs1800955
TT	51.5	41.67	51	0.029
TC	42.5	33.33	31
CC	6	25	18
HTR2A rs6313
CC	66.6	66.66	62.5	0.012
CT	33.33	16.66	12.5
TT	0	16.66	25
MAOA rs1137070
CC	29.1	58.3	37.5	0.506
CT	34.37	25	25
TT	36.36	16.7	37.5

Data expressed as percentage. NS: nonsmokers; LS: light smokers; HS: heavy smokers.