Profile Changes in Weight and Body Mass Index of Single Rod Levonorgestrel Implant Acceptor (Monoplant®)

Abstract

Objective: To finding out the change of weight and body mass index (BMI) of single rodlevonorgestrel implant acceptor (Monoplant®). Methods: A cross-sectional descriptive study was conductedusing data changes of weight and BMI obtained from series of measurement which is recorded in patients' medical record in three years of Monoplant® placement in Raden Saleh Clinic, Jakarta. This method is the part of a research of a bigger phase two in clinical test. Results: From 21 subjects of this research, the average weight and BMI before and after 3 years of Monoplant® placement is gained, i.e. 53.1 (SD 11,0) kg and 22.4 (SD 4.5) kg/m2, and 54.8 (SD 9.4) kg and 23.1 (SD 3.9) kg/m2. Despite the tendency of increasing, statistically the increasing of weight and BMI, however, is meaningless (p=0.09) and (p=0.08). There is a difference of weight in series of measurement, particularly after the 12th month (Repeated test ANOVA p=0.024). Even though there is no difference in BMI average, there is a difference in subject's proportion based on BMI categories before and after Monoplant® placement (Marginal homogeneity test p=0.046). The increasing of levonorgestrel level occurs in the 6th month and subsequently followed by the increase of BMI in the 12th month. Conclusions: There is a tendency of increasing weight and BMI in Monoplant® users, specifically after one year despite statistically insignificant.