Table 1. Distribution of demographic and clinical factors by PON1 Q192R phenotype among in vitro fertilization patients (n = 171).

Factor	PON1 Q192R phenotype
	QQ (n = 70)		QR (n = 73)		RR (n = 28)
	n	%	n	%	n	%
Age (years)
< 35 years old	26	54.2	18	37.5	4	8.3
≥ 35 years old	44	35.8	55	44.7	24	19.5
BMI (kg/m2)
< 25	51	46.4	42	38.2	17	15.5
25–29	13	31.0	22	52.4	7	16.7
≥ 30	6	31.6	9	47.4	4	21.1
Race a, *
non-Asian	56	48.7	47	40.9	12	10.4
Asian	7	14.9	25	53.2	15	31.9
Cigarette smoking b
Never	56	38.4	64	43.8	26	17.8
Ever	9	47.4	8	42.1	2	10.5
Diagnosis
Male factor	28	45.2	26	41.9	8	12.9
Unexplained c	18	37.5	18	37.5	12	25.0
Female factor-non DOR d	13	43.3	14	46.7	3	10.0
Female factor-DOR	9	33.3	14	51.9	4	14.8
PGD-only	2	50.0	1	25.0	1	25.0
COS protocol
Lupron down regulated	48	41.7	48	41.7	19	16.5
Antagonist	18	42.9	17	40.5	7	16.7
Flare	4	28.6	8	57.1	2	14.3

^a n = 9 missing values;

^b n = 6 missing values;

^c includes n = 1 recurrent pregnancy loss;

^d includes n = 10 endometriosis, n = 10 tubal factor, n = 7 polycystic ovary syndrome and n = 3 anovulation;

* P < 0.05 for across PON1 Q192R phenotypes.

BMI, body mass index; COS, controlled ovarian stimulation; DOR, diminished ovarian reserve; FF, follicular fluid; PGD, pre-implantation genetic diagnosis.