A total of 154 patients age 18-70 years with a BMI between 25 and 45 kg/m ( 2 ) and access to a personal computer and the Internet were randomly assigned to 3 months of Internet behavioral intervention ( IBI ; n = 77 ) with 12 weekly videos teaching behavioral weight-loss skills , a platform for submitting self-monitored data , and automated feedback or an education-only Internet-delivered eating and activity control group ( IDEA ; n = 77 ) .