Table 1.

Baseline characteristics of the study sample (N=234)

Age years, median (range)	34 (23–46)
BMI, median (range)	22.4 (16.7–35.9)
Smoking habits, n/N (%)
Unknown	7 (3)
No smokers	186 (79.5)
1–10 cigarettes per day	31 (13.2)
10–20 cigarettes per day	7 (3)
>20 cigarettes per day	1 (0.4)
Not provided	2 (0.9)
Infertility factors, n/N (%)
Male	92 (39.3)
Female	50 (21.3)
Unexplained	79 (33.8)
Mixed	10 (4.3)
Unknown	3 (1.3)
FVL, n/N (%)	11 (4.7)
PTm, n/N (%)	10 (4.3)
Severe thrombophilias*, n/N (%)	3 (1.3)

*Either homozygosis for FVL or PTm; double mutation, FVL or PTm and/or natural anticoagulants deficiency.

BMI, body mass index; FVL, factor V Leiden; PTm, prothrombin mutation.