TABLE 5.

Threshold method results for TOS and SWS compared with VS for data sets.

	Combined set				Training set				Additional set
+ve VS cycles	158				75				83
−ve VS cycles	47				18				29
Total cycles	205				93				112
Participants	80				60				55
Thresholds	±1 day		±3 days		±1 day		±3 days		±1 day		±3 days
Method	TOS	SWS	TOS	SWS	TOS	SWS	TOS	SWS	TOS	SWS	TOS	SWS
TP	86	88	119	140	43	47	55	71	43	41	64	69
FP	53	63	20	11	23	26	11	2	30	37	9	9
TN	43	45	43	45	16	18	16	18	27	27	27	27
FN	23	9	23	9	11	2	11	2	12	7	12	7
Total cycles	205	205	205	205	93	93	93	93	112	112	112	112
Sensitivity	79%	91%	84%	94%	80%	96%	83%	97%	78%	85%	84%	91%
Specificity	45%	42%	68%	80%	41%	41%	59%	90%	47%	42%	75%	75%
PPV	62%	58%	86%	93%	65%	64%	83%	97%	59%	53%	88%	88%
NPV	65%	83%	65%	83%	59%	90%	59%	90%	69%	79%	69%	79%
Accuracy	62.9%	64.9%	79.0%	90.2%	63.4%	69.9%	76.3%	95.7%	62.5%	60.7%	81.3%	85.7%
Upper CI 95%	69.6%	71.4%	84.4%	93.9%	73.2%	79.0%	84.5%	98.8%	71.5%	69.8%	88.0%	91.6%
Lower CI 95%	55.9%	57.9%	72.8%	85.3%	52.8%	59.5%	66.4%	89.4%	52.9%	51.0%	72.8%	77.8%
F score	0.69	0.71	0.85	0.93	0.72	0.77	0.83	0.97	0.67	0.65	0.86	0.90
Upper CI 95%	0.77	0.79	0.90	0.97	0.83	0.87	0.91	1.00	0.78	0.77	0.93	0.95
Lower CI 95%	0.60	0.62	0.78	0.88	0.59	0.65	0.72	0.90	0.54	0.52	0.76	0.81

Note. A single participant was able to take part in both the Training Set and the Additional Set; hence, each participant was able to have one or more cycles, which contributed to both groups, and the total number of participants added together for those two groups in the table above is therefore more than the 80 total participants with positive and negative cycles.

TP, true positive; FP, false positive; TN, true negative; FN, false negative; PPV, positive predictive value; NPV, negative predictive value.