Table 4.

Mean ±SD Arylesterase Activity, for PON1 Regulatory-Region Genotypes

Position	−909	−162	−108	No. ofCases	Mean ±SDArylesteraseActivity(U/ml)	P
−909	CC	GG	CT	20	96.0 ± 41.5	.959
	CG	GG	CT	83	96.5 ± 35.8
−162	CG	AG	CT	80	109.3 ± 36.9	.026
	CG	GG	CT	83	96.5 ± 35.8
−108	CC	GG	CT	20	96.0 ± 41.5	.009
	CC	GG	TT	86	68.2 ± 28.1
All three	GG	AA	CC	14	140.9 ± 52.7	<.001
	CG	AG	CT	80	109.3 ± 36.9
	CC	GG	TT	86	68.2 ± 28.1