Shared decision-making
Shared decision-making is a way of practicing medicine in which the clinician and the patient reach a choice together, combining the clinician’s knowledge of the evidence with the patient’s own values, circumstances and goals. It is the practical method behind the wider idea of choosing wisely: instead of a doctor deciding for a patient, or a patient being handed a decision without support, the two work through the real options side by side. This page describes the approach neutrally as a reference; it is not medical advice, and it is not affiliated with any campaign, organization or prior owner of this domain.
Deciding with patients, not for them
For a long time the default was paternalistic: the clinician judged what was best and the patient complied. Shared decision-making replaces that with a partnership, and it matters most where there is genuine choice, meaning situations with more than one reasonable option and real trade-offs between them. Screening tests, elective procedures, long-term medications and treatments for conditions that are not immediately dangerous are all classic examples. In a true emergency the logic is different, because time and clarity favor immediate action, but a large share of everyday medicine is not an emergency and does involve options worth weighing.
Three elements have to be present for a decision to be genuinely shared. The clinician has to make clear that a choice exists and that the patient’s preferences are legitimate. The options and their consequences have to be explained honestly. And the patient’s own priorities have to be drawn out and factored in. A test or treatment is not automatically the right move simply because it is available.
Why real numbers matter
The heart of shared decision-making is honest information, and that means absolute numbers rather than vague or relative claims. Telling someone a treatment “cuts your risk by a third” sounds impressive but says nothing about the actual stakes. If the risk falls from three in a hundred to two in a hundred, the same “third” describes a small change; if it falls from thirty in a hundred to twenty, it is large. Only absolute figures let a person judge whether a benefit is worth the burden.
The same honesty applies to harms. A full picture presents, in comparable terms, how many people are helped, how many are unaffected, and how many are harmed by a given choice, including the downstream effects of a positive test, such as further procedures or anxiety. When the numbers are laid out plainly, choices that once seemed obvious often become genuine judgment calls, and choices that seemed frightening sometimes turn out to be reasonable.
Decision aids and option grids
Because most people do not carry these numbers in their heads, structured tools exist to support the conversation. Decision aids are booklets, videos or interactive tools that lay out the options for a specific decision, present the benefits and harms in absolute terms, and help a person clarify what matters to them. Option grids are a compact version of the same idea: a single table that answers the questions patients most often ask across each option, so they can be compared at a glance.
A simplified option grid for a decision might compare choices row by row:
| Question patients ask | Option A: treat now | Option B: monitor and wait |
|---|---|---|
| How likely is it to help? | Modest, expressed as a real number out of 100 | Many in this situation stay stable without treatment |
| What are the downsides? | Side effects, cost, daily medication | Uncertainty; the need for follow-up checks |
| Can I change my mind later? | Usually yes | Yes, treatment remains available if things change |
Good decision aids are developed carefully, tested with patients, and kept up to date with current evidence and recommendations. Their aim is not to steer a person toward one answer but to make sure that whatever they choose, they chose it understanding what was at stake.
How it counters reflexive testing and treatment
Shared decision-making is one of the strongest practical defenses against overtesting and overtreatment, because it interrupts the automatic reach for action. When a clinician has to explain, in real numbers, what a test can and cannot reveal and what the chances of benefit and harm are, low-value interventions become harder to justify and easier to set aside. The reflexive “let’s just run it to be safe” gives way to a considered choice, and sometimes that choice is to wait, which is itself a legitimate and active decision.
This makes shared decision-making the working method for the whole movement described in the case for less medicine. It puts flesh on the specialty lists of Choosing Wisely: fewer tests, better care, since asking whether a test is really needed only leads somewhere if the patient’s answer counts. It also delivers on quaternary prevention, the duty to protect people from unnecessary medicine, because a well-informed patient is far less likely to be swept into treatment they do not need.
What it is not
Shared decision-making is not abandoning patients to decide alone, and it is not a way of withholding care to save money. The clinician remains an expert guide who brings knowledge, judgment and a recommendation to the table; what changes is that the recommendation is offered rather than imposed, and the patient’s values help settle the matter. It also does not mean every wish is granted, because part of an honest conversation is explaining when a requested test or treatment is unlikely to help.
Nothing in this approach tells any particular person what to do about their own health, and nothing here is such advice. Its value is procedural: it ensures that the many small decisions of medicine are made in the open, with real information, by the two people best placed to make them. That is what choosing wisely looks like in a single consultation, and it is a quiet corrective to the tendency for ordinary life to be managed as though it were disease, a drift also visible in the marketing of lifestyle drugs.