NCT01342263.

Methods	Study design: mult‐ centre, single‐blinded, parallel individual randomised controlled trial in Canada Duration: 104 weeks Setting: primary and secondary clinics
Participants	Population: 234 adults recruited from Northern Health, Fraser Health, Interior Health, Vancouver Island Health, and Vancouver Coastal Health, Canada Baseline characteristics: unknown Inclusion criteria: ≥ 19 years of age; ≥ 2 of the following chronic diseases: CHF, DM, COPD, kidney disease, heart disease; Internet access; able to read, write, understand English Exclusion criteria: scheduled surgical procedures, not able to give informed consent, comorbidities interfering with management
Interventions	Measurements taken at baseline and at 24 months Treatment arms Interactive website for disease management and daily monitoring Access to dietician and exercise specialists for disease management
Outcomes	Primary outcomes: hospital admissions, emergency room visits, hospital length of stay, physician visits, procedures (diagnostic and lab) Secondary outcomes: SF‐36, heiQ, satisfaction (participants and providers), social support, EQ‐5D‐5L, adhering to intervention
Notes	Funding: Simon Fraser University Other identifier:NCT01342263