Fig. 3From: Preconception underweight impact on postnatal osteoporotic fracture: a retrospective cohort study using Japanese claims dataKaplan–Meier survival: cumulative incidence of osteoporotic fractures in women within 2 years post-delivery. Low body weight, the body mass index is less than 18.5 kg/m2 (solid line); more than normal body weight, the body mass index is over 18.5 kg/m2 (dotted line). Group — underweight (BMI < 18.5 kg/m2, solid line), -– normal/ heavy weight (BMI ≥18.5 kg/m2, dotted line)Back to article page