Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adherence to medication
RCT	453 outpatients, mild to moderate hypertension, on once-daily atenolol, either new cases or existing (previously treated); subgroup analysis of 344 people with existing hypertension Subgroup analysis	Results expressed as medication possession ratio (defined as mean number of days' supply of medication obtained over 360-day trial period) follow-up at 6 months 0.82 with prompting intervention plus patient health education 0.48 with usual care	P <0.05	Effect size not calculated	prompting intervention plus patient health education
RCT	453 outpatients, mild to moderate hypertension, on once-daily atenolol, either new cases or existing (previously treated); subgroup analysis of 109 people with new hypertension Subgroup analysis	Results expressed as medication possession ratio (defined as mean number of days' supply of medication obtained over 360-day study period) follow-up at 6 months 0.93 with prompting intervention plus patient health education 0.52 with usual care	P <0.05	Effect size not calculated	prompting intervention plus patient health education