Introduction: Injectable contraception is the most widely used type of contraception by Indonesian
mothers because of its effective way of working, practical use, and lower price. However, in the use of
injectable contraception, there are side effects, one of which is weight gain. Objective: To find out the
differences in weight gain for 1-month and 3-months of injecting contraceptive acceptors. Method: This
was an analytical observational study with a cross-sectional design. This research was conducted at the
Independent Practice Midwife of Sri Retnaningtyas, Tambaksari District, Surabaya. The total sample is 110
respondents with a consecutive sampling technique. Data collection using medical records and statistical
tests using independent sample t-test. Results: Analyzing the weight gain in the contraceptive injection
acceptor that is the average injection of 1-month experienced of 2.16 kilograms and injections of 3-months
experienced of 2.95 kilograms. The results of the independent t-test with a significance value of 0.039 (p
<0.05). Conclusion: There was a significant difference in weight gain between 1-month and 3-months
injective contraception acceptors, with the highest increase occurred in 3-months, injective contraceptive
acceptors.
Keywords: weight, gain, hormonal, contraception, injection, 1-month, 3-months.