Table 2.

Primary analysis. Bivariate analyses for associations between KRAS mutation and the primary outcome of anatomic phenotyping of endometriosis

	KRAS mutation
	No (n = 58)	Yes (n = 64)	P value*	RR † (95% CI)
Anatomic subtype
SUP only	24 (64.9%)	13 (35.1%)	0.04	RR for DIE or OMA only and mixed versus SUP only = 1.36 (1.06, 1.74)
DIE or OMA only	8 (42.1%)	11 (57.9%)
Mixed	26 (24.2%)	40 (60.6%)
rASRM stage ‡
I	21 (72.4%)	8 (27.6%)	0.02	RR for Stage II–IV versus Stage I = 1.40 (1.12, 1.75)
II	7 (35.0%)	13 (65.0%)
III	10 (37.0%)	17 (63.0%)
IV	18 (41.9%)	25 (58.1%)

^*Chi‐square test for 2 × 3 table (anatomic subtype) and 2 × 4 table (stage).

^† RR for KRAS mutation as the ‘exposure’.

^‡ Stage n = 119.