Table 3.

The Impact of Fibrinogen Concentration on the Risk for Early Pregnancy Loss in Women Carrying the FXIII 34Leu Allele

	Women carrying at least one FXIII 34Leu allele
Fibrinogen (mg/dl)	Cases n (%)	Controls n (%)	OR (95% CI)	P‐values
≤300 a	16 (32)	7 (15)	2.9 (1.1–7.7)*	0.036*
≤284b	10 (20)	3 (6)	3.9 (1.0–15.0)*	0.040*
>300a	9 (18)	10 (21)	0.9 (0.3–2.3)	0.764
>284b	15 (31)	14 (29)	1.1 (0.5–2.6)	0.887

^aMedian of fibrinogen levels of controls.

^bFirst tertile of fibrinogen levels of controls.

*A P‐value < 0.05 was regarded statistically significant.

OR, odds ratio; CI: confidence interval; FXIII: coagulation factor XIII.