Table 4.

Statistical comparison of the autoantibodies in the lupus anticoagulant testing groups

Autoimmune antibodies	Lupus anticoagulant testing		Chi‐square P
	Negative (n = 63)	Positive (n = 7)
aPT IgM	6.3% (4)	0.0% (0)	1.000
aPE IgG	17.5% (11)	28.6% (2)	.473
aPE IgM	38.1% (24)	14.3% (1)	.212
aEM IgG	19.0% (12)	14.3% (1)	.759
ANA	12.7% (8)	42.9% (3)	.038

The positive rate of each autoimmune antibody listed (aPT IgM, aPE IgG and IgM, aEM IgG, ANA) was calculated as the percentage of the frequency of the positive results (indicated in parenthesis) over the total patient number of each group that was based on the lupus anticoagulant testing results.

Abbreviations: aEM, anti‐endometrium; ANA, anti‐nuclear antibodies; aPE, anti‐phosphotidylethanolamine; aPT, anti‐prothrombin.