The following is a partial list of the "N" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM). This list continues the information at List of MeSH codes (N04). Codes following these are found at List of MeSH codes (V01). For other MeSH codes, see List of MeSH codes. The source for this content is the set of 2006 MeSH Trees from the NLM. – health care quality, access, and evaluation – delivery of health care – after-hours care – answering services – attitude of health personnel – nurse's role – refusal to treat – attitude to death – attitude to health – health services misuse – unnecessary procedures – health knowledge, attitudes, practice – patient acceptance of health care – patient compliance – patient participation – patient satisfaction – treatment refusal – integrated delivery of health care – provider-sponsored organizations – dentist's practice patterns – health care costs – direct service costs – drug costs – employer health costs – hospital costs – health care reform – health expenditures – health priorities – health resources – health manpower – health services accessibility – health care rationing – health facility closure – health facility environment – health facility size – marketing of health services – social marketing – health services needs and demand – medically underserved area – needs assessment – physician's practice patterns – professional-patient relations – dentist-patient relations – nurse-patient relations – physician-patient relations – uncompensated care – ethics – bioethics – clinical ethics – conflict of interest – physician self-referral – ethical review – ethics consultation – ethicists – ethics committees – clinical ethics committees – ethics committees, research – institutional ethics – professional ethics – codes of ethics – helsinki declaration – hippocratic oath – clinical ethics – dental ethics – medical ethics – hippocratic oath – nursing ethics – pharmacy ethics – research ethics – health services research – health care surveys – quality assurance, health care – benchmarking – credentialing – accreditation – Joint Commission on Accreditation of Healthcare Organizations – certification – specialty boards – licensure – dental licensure – hospital licensure – medical licensure – nursing licensure – pharmacy licensure – dental audit – facility regulation and control – guidelines – codes of ethics – practice guidelines – medical audit – Commission on Professional and Hospital Activities – nursing audit – professional review organizations