Table 1.

Prevalence of Chlamydial trachomatis IgG, cHSP60 IgG, and Anti-MUC1 IgG in Prospective Blood Samples in Women With High-Grade Serous Ovarian Cancer and Matched Controls

Antibodies	Cases			Controls			P∗
	n	n+	(%+)	n	n+	(%+)
C. trachomatis IgG	92	15	(16.3%)	358†	61	(17.0%)	0.87
1–7.3 years	46‡	8	(17.4%)	176‡	24	(13.6%)	0.52
>7.3 years	69‡	14	(20.3%)	270‡	45	(16.7%)	0.48
cHSP60 IgG§	92	25	(27.2%)	358†	102	(28.5%)	0.80
1–7.3 years	46‡	16	(34.8%)	176‡	54	(30.7%)	0.59
>7.3 years	69‡	18	(26.1%)	270‡	67	(24.8%)	0.83
Anti-MUC1 IgG¶	92	11	(12.0%)	359	24	(6.7%)	0.09
1–7.3 years	46‡	2	(4.3%)	177‡	13	(7.3%)	0.74#
>7.3 years	69‡	9	(13.0%)	270‡	17	(6.3%)	0.06

Abbreviations: C. trachomatis IgG = Chlamydia trachomatis IgG; cHSP60 IgG = chlamydial Heat Shock Protein 60 IgG; MUC1 = mucin 1.

^∗Chi-square test.

^†One control was not evaluated because of technical problems.

^‡The same individual might have samples in both the 1–7.3 years or >7.3 years subgroups.

^§Cutoff for cHSP60 IgG was defined as the mean optical density value of the negative control plus 0.350 and results are presented as positive (+) or negative (−).

^¶Cutoff for high anti-MUC1 IgG level was considered as an optical density of ≥1.0.

^#Fisher's exact test.