RAND sF-12 quality-of-life profile
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Within-tool mean across the 8 SF-12 domains on a transparent 0 to 100 scale
PCS {{ format(pcs) }} MCS {{ format(mcs) }} {{ balanceLabel }} Top: {{ topDomainLabel }} Focus: {{ lowDomainLabel }} Spread {{ format(profileSpread) }} pts
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Answer the 12 RAND SF-12 items based on the past four weeks.

  • Choose one response per item so the domain pattern stays comparable run to run.
  • Your answers stay in this browser unless you choose to export them.
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Share result

Share this result page with someone you trust to review your answers and result.

Domain rank map
Domain profile map
Gap vs support map

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Domain Rank Map ranks the eight domains from lowest to highest so the main watchpoints are obvious before item-level review.

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Main watchpoints
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# Domain Component Score Profile role Action focus
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Scoring note: {{ scoringMethodNote }}

Current anchors
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Repeat-check prep
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Physical side

PCS is built here from Physical Functioning, Role-Physical, Pain, and General Health.

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Mental and social side

MCS is built here from Emotional Well-being, Role-Emotional, Social Functioning, and Energy / Fatigue.

  • {{ row.name }}: {{ row.scoreText }} ({{ row.bandLabel }})
Domain score table

Use this table for the ranked 0 to 100 domain scores, within-tool priorities, and exportable comparison rows.

Domain Component Score Band Vs mean Priority Guidance Copy
{{ row.name }} {{ row.component }} {{ row.scoreText }} {{ row.bandLabel }} {{ row.deltaText }} {{ row.priorityLabel }} {{ row.note }}
Answer review

Each answered item stays tied to its source domain so repeat runs are easier to compare later.

# Domain Item Response Copy
{{ answer.id }} {{ answer.domain }} {{ answer.text }} {{ answer.answer }}
Tags: Psychometrics
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Health-related quality of life asks how health is shaping ordinary living, not just whether a diagnosis is present. Pain, stamina, mobility, mood, and participation can change before lab values move or after the main diagnosis is already known. The SF-12 was created as a shorter Medical Outcomes Study survey so researchers and clinicians could capture that wider picture without asking dozens of questions.

The questionnaire is brief, but it is not narrow. Twelve answers are used to estimate a profile across physical functioning, role limits from physical health, pain, general health, role limits from emotional problems, emotional well-being, energy, and social functioning. Those areas do not always move together. Someone may be climbing stairs more easily while still feeling worn out, or may rate overall health as fair while still describing decent social contact.

Diagram showing twelve SF-12 answers feeding four physical domains and four mental or social domains, then broad physical and mental summaries.

That makes this kind of survey useful in follow-up care, rehabilitation, chronic illness review, and general health research. It gives a structured way to ask whether daily life is improving, holding steady, or becoming harder in a few specific ways. The standard instrument is often reduced further to physical and mental component summaries, but the domain pattern usually carries the most practical detail.

It still has a clear limit. SF-12 is a health-status profile, not a diagnosis and not an explanation of cause. A lower result can reflect pain flare, poor sleep, depression, medication effects, recovery after illness, social strain, or several of these together. If function is dropping quickly, symptoms feel medically urgent, or daily care is becoming unsafe, direct clinical help matters more than another questionnaire.

Technical Details:

Classic SF-12 scoring was built to reproduce the longer SF-36 physical and mental summaries with much less respondent burden. The 12 items are drawn from that broader health survey family and support an eight-scale health-related quality-of-life profile, plus the PCS and MCS summaries that many published studies report.

That background matters because not every SF-12 result uses the same metric. In standard norm-based scoring, PCS and MCS are usually interpreted against a United States population mean of 50 with a standard deviation of 10. This page does not try to recreate that summary scale. Instead, it exposes a transparent profile that is easier to inspect item by item and domain by domain.

Each answer is converted so that 100 always means better health status on that question. Domain scores are then formed by averaging the transformed items inside each domain. The displayed PCS is the simple mean of General Health, Physical Functioning, Role-Physical, and Pain. The displayed MCS is the simple mean of Emotional Well-being, Role-Emotional, Social Functioning, and Energy / Fatigue.

For forward-coded items such as pain relief or energy, the transformed value is:

T = s - 1 n - 1 × 100

For reverse-coded items such as poor general health or frequent social interference, the direction flips so higher still means better health:

T = n - s n - 1 × 100

Domain and summary values are then simple means:

D = ∑ i = 1 k T i k PCS = GH + PF + RP + Pain 4 MCS = EWB + RE + SF + EF 4
Score view What it usually means in published SF-12 work What it means here Main caution
PCS and MCS Norm-based summary scores interpreted against a population reference where 50 is the average. Simple means of four transparent 0 to 100 domains each. Do not compare these values directly with published norm-based PCS or MCS tables.
Domain scores The standard SF-12 is often reported through summary scores rather than a full transparent 0 to 100 domain profile. Eight inspectable domain means built directly from the answered items. Useful for within-page comparison, not a licensed replacement for every formal SF-12 scoring method.
Overall mean No single official SF-12 total is typically emphasized in the literature. The average of all eight domains on the same 0 to 100 scale. Use it as orientation only. It can hide one weak domain inside an otherwise decent profile.
Domain Items Component What the score reflects
General Health 1 Physical Overall self-rating of current health.
Physical Functioning 2 Physical Moderate activity and stair climbing.
Role-Physical 2 Physical Whether physical health reduced work or usual activities.
Pain 1 Physical Recent bodily pain burden.
Role-Emotional 2 Mental Whether emotional problems reduced output or care with work.
Emotional Well-being 2 Mental Calmness and low mood frequency.
Energy / Fatigue 1 Mental Recent energy level.
Social Functioning 1 Mental How often health problems interfered with social activity.

Everyday Use & Decision Guide:

A good first pass is to leave Report lens on Self-reflection first, Focus threshold at 50 / 100, Anchor threshold at 75 / 100, and Recheck window at 4 weeks. Those defaults create a middle reading frame while leaving the underlying domain scores unchanged. Answer the whole survey as one current snapshot. Most questions refer to the last four weeks, so mixing one unusually good day into some answers and a bad stretch into others makes repeat comparison weaker.

The summary badges are for orientation, not for the final judgment. Start with Focus, Top, and Spread, then read the Main watchpoints table. If one domain is much lower than the rest, the Domain Rank Map will show the order quickly and the Gap vs Support Map will show how far that domain sits below your own mean.

  • SF-12 Domain Profile Map is the quickest way to see the overall shape across all eight domains.
  • Domain Rank Map sorts the same domains from lowest to highest so the first pressure point is obvious.
  • Gap vs Support Map is best when the mean looks ordinary but one domain still feels out of place.
  • Domain score table is the best reading surface when you want the exact Score, Band, Vs mean, Priority, and Guidance columns together.
  • Response detail and answer payload are useful only when you need a repeatable record. The response table can also be exported as DOCX for discussion notes.

A common misread is to treat Balanced profile as good news by itself. On this page, that label only means PCS and MCS are close to each other. Both can still be low. In the same way, one strong Anchor domain does not cancel a clearly weak domain. If the result feels wrong, compare the lowest domain in the score table with the related answers in Response detail before you save anything.

Scoring stays in the browser, but copied or downloaded CSV, DOCX, PNG, and export files still preserve sensitive health information. Keep exports only when they help a real follow-up. When you repeat the survey, keep the same thresholds and recheck window so movement in the lowest domain is easier to trust.

Step-by-Step Guide:

The workflow is short once you know which panel answers which question.

  1. Press Begin Assessment. The first question, the progress bar, and the question navigator should appear immediately. If the progress bar stays below 100% later on, an unanswered row in that navigator is usually the reason.
  2. Answer all 12 items in one sitting. When the last item is complete, the summary box appears with the overall mean, PCS, MCS, the balance label, Top, Focus, and Spread.
  3. Open Advanced only after the first read-through. Adjust Report lens, Focus threshold, Anchor threshold, or Recheck window if needed. Expect the watch and anchor wording to update while the raw domain scores stay the same.
  4. Read Main watchpoints before looking at exports. The table under that heading shows each domain's Component, Score, Profile role, and Action focus, plus the scoring note below it.
  5. Use the three chart views for different jobs: Domain Rank Map for order, SF-12 Domain Profile Map for shape, and Gap vs Support Map for distance from your own mean. Each chart group has its own PNG and CSV export buttons.
  6. Open Domain score table, Response detail, and answer payload before copying or downloading anything. If one low domain surprises you, verify the related answers in Response detail first, then export CSV, DOCX, or PNG only after the pattern looks believable.

A repeat run is most useful when the same person, the same recall frame, and the same reading settings are used again.

Interpreting Results:

The lowest domain usually matters more than the overall mean. The mean tells you where the eight-domain profile sits on average, but it cannot tell you whether one domain is sharply worse than the rest or whether the whole profile is moving together.

Output cue What to trust What not to overread
Overall mean A quick orientation across all eight domains. It is not an official SF-12 total and it can hide one clear weak domain.
PCS versus MCS Which broad grouping is currently higher inside this page's transparent profile. These are not norm-based published PCS or MCS values.
Domain spread Whether the profile is even or uneven. A wide spread shows contrast, not cause.
Priority and Anchor labels Practical reading aids built from the current focus and anchor thresholds. Changing thresholds changes the labels, not the underlying scores.

A Balanced profile can still describe a rough month if PCS and MCS are both low. A strong domain can also sit beside one serious gap. The best verification step is simple: find the lowest domain in the Domain score table, then check the matching answers in Response detail. If the same domain stays low across repeat checks, that repeated pattern matters more than one-point movement in the mean.

Use the current thresholds as reading aids, not as medical cutoffs. By default, scores below 50 become watch areas, scores below 40 become primary focus areas, and scores at 75 or above become anchors. Those labels help with follow-up planning, but they do not convert the survey into a diagnostic test.

Worked Examples:

One obvious gap in an otherwise decent month

A person completes the survey and gets an overall mean of 68.8. PCS is 78.1, MCS is 59.4, so the summary badge reads Stronger physical. In the Domain score table, Pain is 87.5 and Physical Functioning is 75.0, but Energy / Fatigue is only 35.0. The average still looks decent, yet the Domain Rank Map and Gap vs Support Map make the fatigue problem impossible to miss. The right read is not “everything is fine.” It is “most domains are holding up, but energy is the clear first target.”

Balanced does not mean strong

A second run shows PCS 46.9 and MCS 45.8, so the balance badge reads Balanced profile. With the default focus threshold of 50, the Domain score table lists General Health 25.0, Pain 37.5, Emotional Well-being 40.0, and Energy / Fatigue 40.0. This is a balanced result only in the narrow sense that physical and mental summaries are close. The profile is still broadly strained, and the low-domain cluster matters more than the balance label.

When the results never appear

A user answers 11 questions and expects charts, but the progress bar stops at 92% and one row in the question navigator has no green check. Until the last item is answered, the summary box, Main watchpoints, charts, and answer payload do not populate. After the missing question is completed, the badges, tables, and export buttons appear immediately. When the page looks blank after almost finishing, incomplete answers are the first thing to check.

FAQ:

Are the PCS and MCS numbers official SF-12 summary scores?

No. On this page, PCS and MCS are transparent averages of four 0 to 100 domains each. They are useful for within-page comparison, but they are not the same as published norm-based SF-12 summary scores.

Why can the page say Balanced profile when several domains are low?

Because Balanced profile only means PCS and MCS are close to each other. It does not mean the scores are high. Check the Domain score table and the Focus badge before taking comfort from that label.

Why am I not seeing any charts or answer record yet?

All 12 questions have to be answered first. If the progress bar is below 100% or a question in the navigator has no green check mark, finish that item and the summary, charts, and answer payload will appear.

Do Focus threshold and Anchor threshold change my scores?

No. They only change how the page labels watch areas, primary focus areas, and anchors. The raw domain values, PCS, MCS, and overall mean stay the same.

Can I compare these numbers with published SF-12 studies?

Only with caution. Published studies often report norm-based PCS and MCS values centered around population reference scores. This page uses transparent 0 to 100 item transforms and simple domain means instead.

Where does my data go when I use the page?

Scoring stays in the browser unless you choose to copy or download something. Exported CSV, DOCX, PNG, and export files still contain sensitive health information, so treat them like personal records.

Glossary:

Health-related quality of life
A broad description of how health affects daily function, comfort, mood, and participation.
PCS
The page's physical summary, built from General Health, Physical Functioning, Role-Physical, and Pain.
MCS
The page's mental summary, built from Emotional Well-being, Role-Emotional, Social Functioning, and Energy / Fatigue.
Domain spread
The point difference between the strongest and weakest domain in the same run.
Anchor
A higher-scoring domain that meets the current anchor threshold and can serve as a stable comparison point on the next run.

Responsible Use Note:

Use this profile as a structured follow-up aid, not as a substitute for clinical judgment. If pain, breathlessness, exhaustion, low mood, or loss of function is getting worse, if routine tasks are becoming unsafe, or if the result matches a serious decline that needs explanation, use direct medical or mental-health support rather than relying on another questionnaire alone.

References: