Despite the availability of free contraception from family planning clinics, the rate of unwanted pregnancy in Iran is still high. The effectiveness of other methods for contraceptive supply should, therefore, be evaluated. This study aimed to determine the effects of CBD on contraceptive usage in Iran.

This controlled field trial study involved 297 individuals (100 subjects in the CBD group and 197 subjects in the control group) from four major remote areas of Hamedan, Iran. Stratified random sampling was used.

Data analysis suggested that using CBD has four primary effects: it increases the level of contraceptive knowledge, it enhances correct contraceptive choice by couples, it improves contraceptive usage, and it improves contraceptive continuation rates.

The study concluded that the CBD facilitates better knowledge, proper choice, and correct and continuous contraception usage. This method should, therefore, be adopted for family planning services in remote areas of Iran. Due to promising results, the community-based distribution and contraception usage in Iran is a suitable method. People should adopt it for better contraception and decrease unwanted pregnancies. Likewise, further researches should be done to explore the community-based distribution and contraception usage.