Table 3. Results according to risk category N=148.

	RMI/RCOG (N=73) n (%)	SRMP (N=75) n (%)
Low risk
Assigned to category	29 (39.7%)	70 (93.3%)
Primary non-staging surgery, benign outcome	0	0
Primary non-staging surgery, malignant outcome	0	0
Primary staging surgery, benign outcome	0	0
Primary staging surgery, malignant outcome	0	0
Accepted follow-up	29 (100%)	70 (100%)
Completed follow-up	23 (79.3%)	61 (87.1%)
Lost to follow-up/missing data/deceased	6 (20.7%)	7 (10.0%)
Secondary non-staging surgery, benign outcome	0	0
Secondary non-staging surgery, malignant outcome	0	0
Secondary staging surgery, benign outcome	0	2 (2.7%)a
Secondary staging surgery, malignant outcome	0	0
Intermediate risk
Assigned to category	43 (58.9%)	4 (5.3%)
Primary non-staging surgery, benign outcome	16 (37.2%)	1(25.0%)
Primary non-staging surgery, malignant outcome	0	1 (25.0%)b
Primary staging surgery, benign outcome	0	0
Primary staging surgery, malignant outcome	1 (2.3%)c	2 (50.0%)d
Requested ultrasound scan follow-up	19 (44.2%)	0
Not fit for surgery, ultrasound scan follow-up	7 (16.3%)	0
Surgery during follow-up	0	0
High risk
Assigned to category	1 (1.4%)	1 (1.3%)
Primary non-staging surgery, benign outcome	0	0
Primary non-staging surgery, malignant outcome	0	0
Primary staging surgery, benign outcome	0	0
Primary staging surgery, malignant outcome	1 (100%)e	1 (100%)e
Referred tertiary oncology unit	1	1
Requested ultrasound scan follow-up	0	0
Not fit for surgery, follow-up	0	0
Surgery during follow-up	0	0
Total patients
Surgery	18	7
Primary surgery	18	5
Primary surgery, benign outcome	16	1
Primary surgery, malignant outcome	2	4
Secondary surgery	0	2
Secondary surgery, benign outcome	0	2
Secondary surgery, malignant outcome	0	0

Abbreviations: RCOG=Royal College of Obstetricians and Gynaecologists guideline; RMI=Risk of Malignancy Index; SRMP=Simple Rules Management Protocol.

^aReferred to oncology: one diagnosed with breast cancer, one diagnosed with endometrial cancer.

^bPapillary thyroid cancer probably having arisen in a dermoid.

^cMetastatic bowel cancer.

^dTwo borderline ovarian tumours.

^eBorderline ovarian tumour.