Adherence - Wikipedia definition (summarized)
- up to 90% of diabetes patients do not take their medication well enough to benefit from that medication.
- 33-50% of some cancer patients take less of their anti-cancer medicine than required.
- only 75% of coronary heart disease (CHD) patients take sufficient medicine for it to be effective.
- Up to 75% of hypertensive patients do not adhere to their medicine.
- 41-59% of mentally ill patients take their medication infrequently or not at all.
- 33% of patients with schizophrenia don’t take their medicine at all, and 33% are poorly adherent.
- Less than 27% depressed patients adhere to their medication.
- CHD costs the NHS in excess of £2billion on medicines; 50% of which is wasted through poor understanding and poor adherence.
- Economic studies consistently show that the costs incurred with poorly controlled asthma are higher than those for a well-controlled patient with the same severity of disease. For severe asthma, it has been estimated that the savings produced by optimal control would be around 45% of the total medical costs.