Kordy, H.

treatment children intervention program maintenance bmi-sd message health change feedback behavior study patient smsmt monitoring ef ficacy effect research client adherence maintenance treatment participant phone bauer self-monitoring kordy h / patient education group hospital sms-based obesity month childhood text messaging psychotherapy result feedback message 36 weeks sms program phase outcome sms-based maintenance treatment number support approach symptom 3 months assessment messaging bulimia nervosa score ficacy message service erasmus university information education software participation weight kordy paper feedback messages behavior change fi ndings fi eld sms intervention counseling health care software program question age groups communication maintenance effects nding pattern university body mass index psychotherapy research provider treatment providers