Table 1

Initial broad thematic framework agreed by partners

Personal attitudes	Subjective norms	Behavioural controls
Attitudes about sexual health	Culture of chlamydia testing	Barriers to chlamydia testing
Role of GP practice in testing for STIs	Value and practicalities of involving all GP staff	Staff knowledge and skills around testing procedure
Benefits of testing for chlamydia	Testing practice in the area and guidelines	Patient knowledge around testing procedures
Attitudes on combining chlamydia with HIV tests and contraception	Public campaigns	Time and forgetfulness
Attitude about raising sexual health chlamydia in different consultations	Patient knowledge and attitudes	Attendance of young people at surgery
Perceived views of young people around chlamydia testing	Types of trainer that would be respected	Facilitators: for example, computer prompts, reimbursement/ Testing process and materials needed in the practice
Views about different resources	Incentives	Maximising test return by patients