IRCT20171227038097N1 IRCT 2018-02-26 Tehran University of Medical Sciences The effect of educational package with the help of health literacy index on medication adherence and hypertension management in elderly patients with hypertension The effect of patient education based on Health Literacy INDEX on medication adherence and hypertension management in elderly patients with primary hypertension 2018-01-05 anticipated 120 Complete https://irct.ir/trial/28550 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Education/Guidance, Randomization description: After collecting basic information, all samples are randomly assigned block size of 4 in two groups of intervention and control. For generating random sequences used from the randomizer.org website, and for conceal allocation , dark envelopes will be used to specify the group name. Then, according to the order of entering samples, envelope number one is opened for the first sample and the group will be identified. N/A Hypertension. Control group received the usual services from the clinic and the intervention group was divided into small groups (to save time and affordability) and during two sessions attending the clinic in the first and second weeks and four telephone conversations in the third And fourth weeks will be taught By using content Adapted to the level of health of people, with the help of the Health Literacy Index.. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no more information.