Disease or patient registries are collections of secondary data related to patients with a specific diagnosis, condition, or procedure, and they play an important role in
post marketing surveillance Postmarketing surveillance (PMS), also known as post market surveillance, is the practice of monitoring the safety of a pharmaceutical drug or medical device after it has been released on the market and is an important part of the science of pharmac ...
of pharmaceuticals. Registries are different from indexes in that they contain more extensive data.
In its simplest form, a disease registry could consist of a collection of paper cards kept inside "a shoe box" by an individual physician. Most frequently registries vary in sophistication from simple spreadsheets that only can be accessed by a small group of physicians to very complex databases that are accessed online across multiple institutions.
They can provide health providers (or even patients) with reminders to check certain tests in order to reach certain quality goals.
Versus electronic medical records
Registries are less complex and simpler to set up than
electronic medical record
An electronic health record (EHR) is the systematized collection of patient and population electronically stored health information in a digital format. These records can be shared across different health care settings. Records are shared throu ...
s that according to a recent survey are only used by 9% of small offices where almost half of the US doctors work.
An electronic medical record keeps track of all the patients a doctor follows but a registry only keeps track of a small sub population of patients with a specific condition.
Types of medical conditions tracked
More than 130 million Americans live with chronic diseases and chronic diseases account for 70% of all deaths in the US. "The medical care costs of people with chronic diseases account for more than 75% of the nation's $2 trillion medical care costs."
Registries target certain conditions because medical expenses are unevenly distributed: most health care expenses are spent treating patients with a few chronic conditions.
For example, the 2002 expenses with
diabetes
Diabetes, also known as diabetes mellitus, is a group of metabolic disorders characterized by a high blood sugar level ( hyperglycemia) over a prolonged period of time. Symptoms often include frequent urination, increased thirst and increased ap ...
in the US was $132 billion, and this was around 12% of the US medical budget. Diabetes accounts for 25% of the Medicare budget.
Given this, diabetes is one of the conditions targeted by registries. Diabetes is also amenable to this because there is a target population that can be defined according to certain rules and there is evidence that certain tests like retina exams, LDL levels, HgbA1c levels can correlate with quality of care in diabetes.
Because of the diabetes impact, the New York City created a HbA1C Registry (NYCAR) to help health providers keep track of patients with diabetes.
Another example of disease registry is the New York State CABG Registry that tracks all cardiac bypass surgery performed in the state of New York
On a survey of 1040 US physician organizations published in Journal of the American Medical Association, diabetes registries are used by 40.3%, asthma registries are used by 31.2% of physician organizations, CHF registries are used by 34.8% and depression registries are used by 15.7%.
Other tests like Pap smears are also useful to keep track in registries because there is evidence that when done annually in women of certain ages groups can detect and prevent cervical cancer.
Many of measures tracked are based on
evidence-based medicine
Evidence-based medicine (EBM) is "the conscientious, explicit and judicious use of current best evidence in making decisions about the care of individual patients". The aim of EBM is to integrate the experience of the clinician, the values of t ...
and are defined and standardized by national organizations like the
NCQA
The National Committee for Quality Assurance (NCQA) is an independent 501(c)(3) nonprofit organization in the United States that works to improve health care quality through the administration of evidence-based standards, measures, programs, and ...
.
Patient registries are particularly useful for evaluating the safety of
orphan drug
An orphan drug is a pharmaceutical agent developed to treat medical conditions which, because they are so rare, would not be profitable to produce without government assistance. The conditions are referred to as orphan diseases.
The assignment of ...
products as well as the safety of drugs in specific populations.
Medical devices registries
Countries like Australia, Britain, Norway, Sweden, and America have national a
joint replacement registry that track patients with artificial joints.
"The use of joint registries has proven beneficial abroad. In Australia, regulators use such data to force manufacturers to justify why poorly performing hips or knees should remain available, and products have been withdrawn as a result. In Sweden several years ago, surgeons alerted by their national registry stopped using a badly flawed hip long before their American counterparts did. A few medical organizations in the USA, like Kaiser Permanente, operate their own registries to good effect and the Hospital for Special Surgery in New York has recently set up a registry.
Experts say that the United States wastes billions of dollars annually on medical treatments which may not work. But the financial and human consequences are also large when evidence exists but is not collected."
Cost-effectiveness
The cost-effectiveness of a disease registry is related with the cost-effectiveness of prevention of specific medical conditions. Increasing compliance through a registry with preventive measures like children vaccination or colonoscopy screening can actually be a cost-saving measure. "A mammogram every 2 years for women aged 50–69 costs only about $9,000 per year of life saved. This cost compares favorably with other widely used clinical preventive services."
Pay-for-performance (P4P)
Registries can be associated with pay-for-performance (P4P) quality based contracts for individual doctors, groups of doctors or even all doctors in a country. For example, the United Kingdom, rewards physicians according to 146 quality measures related with 10 chronic diseases that are tracked electronically.
In the United States, Medicare also started a 1.5% P4P contract based on health measures that can be tracked by disease registries.
Technical aspects of data tracking
The quality of a disease registry is contingent on the quality of its data and all the processes involved in updating it and keeping its integrity. In every registry there is always a risk of "
garbage in, garbage out
In computer science, garbage in, garbage out (GIGO) is the concept that flawed, or nonsense (garbage) input data produces nonsense output. Rubbish in, rubbish out (RIRO) is an alternate wording.
The principle applies to all logical argumentatio ...
". Issues that can affect a registry and its acceptance by a physician group:
* Is the registry only updated centrally or can a physician update or correct it? For example, a physician does not want to get reminders from a registry regarding diabetes patients that died, moved to another state or left her/his practice.
* Most frequently, a list of patients with a certain condition (e.g. diabetes) is generated based on certain criteria. In the U.S.,
Healthcare Effectiveness Data and Information Set
The Healthcare Effectiveness Data and Information Set (HEDIS) is a widely used set of performance measures in the managed care industry, developed and maintained by the National Committee for Quality Assurance (NCQA).
HEDIS was designed to allow ...
(HEDIS) criteria are set annually by the
National Committee for Quality Assurance
The National Committee for Quality Assurance (NCQA) is an independent 501(c)(3) nonprofit organization in the United States that works to improve health care quality through the administration of evidence-based standards, measures, programs, and ...
(NCQA). These criteria, in order to avoid paper charts reviews are in most cases based on insurance claims. For example, for diabetes, HEDIS selects an eligible population based on Age (18–75 years), continuous enrollment with a certain health insurer and certain "Events/diagnosis" from Pharmacy data (electronic), Insurance Claims data (electronic) or from medical records. Pharmacy data is based on a list of medications prescribed for diabetes Claims data is based on having two outpatient visits with a doctor or one inpatient hospital admission or one Emergency Room visit with the diagnosis of diabetes. Patients are excluded if they have
polycystic ovaries
Polycystic ovary syndrome, or PCOS, is the most common endocrine disorder in women of reproductive age. The syndrome is named after the characteristic cysts which may form on the ovaries, though it is important to note that this is a sign and no ...
or just
gestational diabetes
Gestational diabetes is a condition in which a woman without diabetes develops high blood sugar levels during pregnancy. Gestational diabetes generally results in few symptoms; however, it increases the risk of pre-eclampsia, depression, and of ...
. Despite the strict criteria it is possible for physicians to have patients on their registries that are not truly diabetic.
Examples
Below is a growing list of patient registries.
* Newborn Screening (NBS) Connect Patient Registry for patients with inborn errors of metabolism
* DuchenneConnect Patient Registry for patients with Duchenne and Becker Muscular Dystrophy.
* PatientCrossroads – pan disease patient registries
* International Collaborative Gaucher Group (ICGG) Gaucher Registry is largest ongoing longitudinal international database that tracks demographic and clinical outcome data from patients with Gaucher disease
* Vascular health ASsessment Of The hypertENSive patients (VASOTENS) Registry, the international registry for ambulatory blood pressure and arterial stiffness telemonitoring.
*
TREAT-NMD
TREAT-NMD (treat NeuroMuscular Disease) is a global academic network that focuses on advancing research in neuromuscular disorders. It was established in 2007 with its coordination centre at the Newcastle University. As of 2018, the network com ...
patient registries in
neuromuscular disorders
A neuromuscular disease is any disease affecting the peripheral nervous system (PNS), the neuromuscular junction, or skeletal muscle, all of which are components of the motor unit. Damage to any of these structures can cause muscle atrophy and ...
See also
*
Clinical trials registry
Preregistration is the practice of registering the hypotheses, methods, and/or analyses of a scientific study before it is conducted. This can include analyzing primary data or secondary data. Clinical trial registration is similar, although it may ...
References
{{reflist
Health care quality
Health informatics
Evidence-based medicine
Medical terminology