The Mathematical degradation process model was found to be appropriate and applied to two bio-object frameworks: (i) comparison among parous and nulliparous women based on low and high Body Mass Index (BMI), waist circumference (WC), and oral contraceptive (OC) consumption levels, and (ii) the profiling of 17β-estradiol and progesterone across upper, middle, and lower tertiles. Validation against medical field data revealed no significant relationship between the reliability function of the degradation process for 17β-estradiol and progesterone and women’s parity status. Monotonically increasing curves indicated that the reliability function exhibited maximum performance in women with a high BMI (>25 kg/m²) and those consuming oral contraceptives for over three years. However, daily salivary observations presented an inverse trend across tertiles, where the lower tertile (<10 years) served as the upper bound, the upper tertile (13.5 years) as the lower bound, and the middle tertile (10–13.5 years) exhibited an intermediary profile. This analysis highlights distinct hormonal patterns and their interactions with physiological and lifestyle factors.
