In all the world, ประสิทธิ์ไชย (ประสิทธิ์ไชย ) is an extremely rare unknown gender forename. Much more frequently, ประสิทธิ์ไชย is the last name as well as the forename.
อภิพล, ชลัยธร, and รัชนี
) is an extremely rare unknown gender forename. Much more frequently, ประสิทธิ์ไชย is the last name as well as the forename.