Nocturnal finger skin temperature in menstrual cycle tracking: ambulatory pilot study using a wearable Oura ring

BMC Women's Health

Table 2 Menstruation prediction: performance of algorithm MENSES

Window (days)	Menstruations (TP + FN)^a	Sensitivity (%)	PPV (%)
±4	96	86.5	85.6
±3	97	81.4	81.4
±2	96	71.9	71.1
±1	96	50.0	49.5

^aThe differences in the number of TP + FN are caused by different data availability requirements of the different windows. TP true positive, FN false negative, PPV positive predictive value

ISSN: 1472-6874