Similarly , there was no clear evidence of effect for cardiovascular risk factors , although again the number of studies reporting these was small .
There was some evidence for beneficial effects on HRQOL , dietary outcomes , and physical activity , although firm conclusions can not yet be made .
The effects on healthcare utilisation and cost-effectiveness are also inconclusive , and trials are yet to measure the impact of  Internet interventions on compliance with medication .
BACKGROUND The Internet could provide a means of delivering secondary prevention programmes to people with coronary heart disease ( CHD ) .
OBJECTIVES To determine the effectiveness of Internet-based interventions targeting lifestyle changes and medicines management for the secondary prevention of CHD .
The health impact of an online heart disease support group: a comparison of moderated versus unmoderated support.
The aim of this study was to assess whether our online closed community heart care support group and information re source could sustain changes in health behaviour after the moderators withdrew their support . Heart patients ( n = 108 ) living in a deprived area of Greater Manchester were recruited from general practitioners ' coronary heart disease registries . The sample for this r and omized controlled trial was divided in half at r and om where half of the participants received password-protected access to our health portal and the other half did not . At 6 months follow-up ( based on the moderated phase ) , there was a significant difference between the experimental group and the controls in terms of self-reported diet ( eating bad foods less often ) . This change in behaviour was not sustained during the 3-month unmoderated phase . During this unmoderated phase of the intervention , the experimental group had significantly more health care visits compared with the controls . There was no significant difference between the two phases for either group in terms of exercise , smoking or social support . This study offers insight into the potential implication s for health changes of moderating arrangements for online health communities
Similarly , there was no clear evidence of effect for cardiovascular risk factors , although again the number of studies reporting these was small .
There was some evidence for beneficial effects on HRQOL , dietary outcomes , and physical activity , although firm conclusions can not yet be made .
The effects on healthcare utilisation and cost-effectiveness are also inconclusive , and trials are yet to measure the impact of  Internet interventions on compliance with medication .
BACKGROUND The Internet could provide a means of delivering secondary prevention programmes to people with coronary heart disease ( CHD ) .
OBJECTIVES To determine the effectiveness of Internet-based interventions targeting lifestyle changes and medicines management for the secondary prevention of CHD .