The state of Gujarat in India prohibits the consumption of alcohol. A lot of its cities are considered to the safest for woman in India. While alcohol is available illegally, its consumption is still frowned upon. This relative safety is sometimes correlated with Gujarat being a dry state. I tried to search for any studies but could not find any so it may just be a coincidence. I have lived in Gujarat and the night life is very family friendly and usually involves lots of street food instead of bars and restaurants!