Progress and Measurement

How to Tell If Your Pelvic Floor Training Is Working

By the Pelvi Health team · Updated · 10 min read

The short answer

  • The ICIQ-UI SF scores urinary leaking from 0 to 21 using three questions, and it is the instrument most incontinence trials report.
  • The PFDI-20 covers the wider picture in 20 questions across prolapse, bowel and bladder symptoms, scoring 0 to 300, where lower is better.
  • A change only counts once it is bigger than the measurement noise. Published estimates put a meaningful ICIQ-UI SF improvement at roughly 2.5 points, and the PFDI-20 threshold varies by treatment, from roughly 13 points in conservative care up to the 40s after surgery.
  • Score yourself before you start, not after you have already improved. A baseline you did not take is the one number you cannot go back and get.
On this page

Clinicians do not judge pelvic floor treatment on whether it feels better. They score it, using two short questionnaires that turn a symptom into a number you can repeat. The ICIQ-UI SF scores urinary leaking from 0 to 21 in three questions. The PFDI-20 covers bladder, bowel and prolapse symptoms in twenty. Both are free to fill in, both take minutes, and both are far more useful than a memory of how last month felt.

Why a bit better is not a measurement

Three things make self-assessment unreliable in exactly this area. Symptoms fluctuate week to week with sleep, illness, hydration, constipation and stress, so any single day is a poor sample. Memory rewrites: once you feel better, the past feels worse than it was, and once you feel discouraged, it feels as though nothing has ever changed. And the thing that improves first is often not the thing you are watching.

A score fixes all three, because it asks the same questions about the same window of time every time you take it. It also converts your experience into something a urogynaecologist or a pelvic health physiotherapist recognises instantly, which turns a rushed appointment into a productive one.

The ICIQ-UI SF: three questions, zero to twenty one

The ICIQ-UI Short Form is the instrument most incontinence research reports, published by the ICIQ questionnaire group (ICIQ). It has three scored items and one unscored one:

ItemWhat it asksScore range
1How often you leak urine0 to 5
2How much you usually leak, protection or not0 to 6
3How much leaking interferes with everyday life, on a scale from not at all to a great deal0 to 10
4When leaks happen: on coughing, on the way to the toilet, in your sleep, during activity, and so on. Not scored.Not scored
Total is the sum of items 1 to 3. Item 4 is not scored: it tells a clinician which kind of incontinence you are describing.

The total runs from 0 to 21, and the published severity bands are 1 to 5 slight, 6 to 12 moderate, 13 to 18 severe, and 19 to 21 very severe. A partial answer has no meaning: if you skip one of the three scored items, there is no total, and inventing one is worse than having none.

The PFDI-20: twenty questions, three subscales, zero to three hundred

The Pelvic Floor Distress Inventory short form is the wider instrument. Its twenty items split into three subscales, and its great advantage over the ICIQ is that it does not assume your problem is urinary.

  • POPDI-6, six items on prolapse symptoms: pressure, heaviness, a bulge, and the feeling of not emptying properly.
  • CRADI-8, eight items on colorectal and anal symptoms: straining, incomplete emptying, leakage of stool or wind, pain with bowel movements.
  • UDI-6, six items on urinary symptoms: frequency, urgency, leaking on effort, difficulty emptying, pain.

Each item scores 0 if you do not have the symptom at all, and 1 to 4 for how much it bothers you if you do. A subscale is the average of the items you answered, multiplied by 25, so each subscale runs 0 to 100. The total is the three subscales added together, so it runs 0 to 300. Lower is better everywhere, which trips people up constantly, because it is the opposite of a fitness score.

The subscale split is the useful part. A total that barely moves while POPDI drops by 20 tells you the prolapse symptoms improved and the bowel symptoms did not, which is a completely different conversation from nothing worked.

How much change counts as real

A number that moves is not automatically a number that means something. Every instrument has noise, and researchers publish a minimum important difference: the smallest change that patients themselves report as a genuine improvement.

InstrumentRangeA change worth calling real
ICIQ-UI SF0 to 21, lower is betterAround 2.5 points in a self-management population at four months. Published estimates vary with how strictly improvement is defined.
PFDI-200 to 300, lower is betterRoughly 13 to 23 points in conservative care, and higher, into the 20s to 50s, after surgery.
Sources: published minimum important difference estimates for each instrument. See the source list below.

2.5 points

Approximate minimum important difference for the ICIQ-UI SF reported in a self-management population at four months. Smaller changes are hard to distinguish from measurement noise.

Source: Minimum important difference of the ICIQ-UI SF score after self-management of urinary incontinence (PMC10865549), 2024

The practical consequence: if your ICIQ total goes from 12 to 11, do not celebrate and do not despair. That is inside the noise. From 12 to 8 is a result (minimum important difference review). For the PFDI-20, the threshold depends on what kind of treatment you are having, and the conservative-care numbers are the relevant ones if you are doing exercises rather than having surgery (MID and PASS estimates).

When to score, and how often

Both instruments ask about a recent window, so scoring weekly measures weather rather than climate. A schedule that works:

  1. Day 0, before you change anything. This is the one people skip and the only one you cannot go back and collect. Score yourself the day you decide to start, not the day you notice progress.
  2. Day 30. Early. Expect coordination gains rather than symptom change, and do not read too much into a flat result.
  3. Day 60. The trend point. Two scores make a line, three make a direction.
  4. Day 90. The decision point, because ninety days is the trial length the guidelines use for pelvic floor muscle training (NICE NG123). Either it moved, or you have a specific, dated, scored reason to go back to a clinician.

How we do it inside the app

Pelvi uses these two instruments and it uses them on exactly that schedule: it offers a progress check on program days 1, 30, 60 and 90, and it can always be postponed. It is deliberately not part of the daily check-in, because twenty-four questions bolted onto a thirty-second habit is how you kill the habit.

Two design decisions are worth stating because they are the ones that make the number trustworthy. The item wording is the standard wording, not a friendlier rewrite, because a rewritten instrument is not the instrument any more and a score a clinician cannot trust is worse than no score. Where a clinical word is unavoidable, a plain English hint sits underneath the question rather than replacing it.

The same principle governs how sessions get marked done. A video counts only once 80% of it has been watched, and a day counts only once 60% of that day's videos are complete. An app that marks a session done when you open it produces a beautiful adherence chart and a worthless experiment, and if the chart is worthless then so is any conclusion you draw from comparing it against your scores.

Four things that will ruin your data

  • Scoring only when you feel bad. Or only when you feel good. Put the four dates in a calendar on day 0 and keep them.
  • Changing three things at once. New exercises, less caffeine and a new medication in the same fortnight means you will never know which one worked.
  • Answering how you want to be rather than how you are. Nobody sees this but you and, if you choose, your clinician.
  • Reading a rise as failure. A worse score after an illness, a stressful month or a return to running is information. It tells you what loads your system, which is genuinely useful.

What to do with the numbers

Take them with you. A scored baseline and a scored ninety-day follow-up turn an eight-minute appointment into a conversation about what to change rather than an attempt to reconstruct four months from memory. Both instruments are recognised immediately by pelvic health physiotherapists and urogynaecologists, which is exactly why they are worth using instead of a symptom diary you invented.

And if the numbers have not moved after ninety days of doing the right things, that is not a wasted quarter. It is a documented, dated, scored trial of first-line treatment, which is the strongest possible position from which to ask for the next step. What that next appointment involves is here.

A score is not a substitute for being seen

  • Any new blood, in urine or from the vagina outside a period, needs investigating regardless of what a questionnaire says.
  • Pain is under-represented by both of these instruments. If pain is your main symptom, do not let a reassuring total talk you out of an appointment.
  • A rising score over two consecutive checks means get assessed, not try harder.
  • If you are pregnant or within a year of birth, the urgent maternal warning signs override any score.

The full red flag list is here, and it is the article to read first if anything on this page made you uneasy.

Questions people ask next

Are these questionnaires free to use?
The ICIQ family is distributed by the ICIQ group and is free for individual clinical and research use, with registration required for study use. The PFDI-20 is widely published in the medical literature. Both are used routinely in clinics.
How often should I score myself?
Monthly is plenty. These instruments ask about the last four weeks, so scoring weekly measures noise. A baseline, then day 30, day 60 and day 90 gives you a curve without turning your recovery into a spreadsheet.
My score went up. Does that mean I am worse?
It might mean a bad four weeks rather than a trend. One score is a point, two scores are a line, three are a direction. Also check whether something changed: a new medication, an illness, a return to running.
Can I show these scores to my doctor?
Yes, and that is the main reason to bother. A urogynaecologist or a pelvic health physiotherapist recognises both instruments immediately, which makes an eight-minute appointment far more productive than describing symptoms from memory.
What if my symptom is not urinary?
The PFDI-20 is the better fit, because it has separate subscales for prolapse symptoms and for bowel and rectal symptoms alongside the urinary ones. The ICIQ group also publishes separate questionnaires for bowel symptoms and for sexual function.

Sources

  1. ICIQ-UI Short Form, the ICIQ questionnaire group.The instrument itself: three scored items (frequency 0 to 5, amount 0 to 6, interference 0 to 10) totalling 0 to 21, plus one unscored item on when leaks happen.
  2. Minimum important difference of the ICIQ-UI SF score after self-management of urinary incontinence (PMC10865549). 2024.Reviews published minimum important difference estimates for the ICIQ-UI SF, including a drop of about 2.5 points at four months in a self-management population.
  3. Minimal important difference and patient acceptable symptom state for PFDI-20 and POPDI-6 in pelvic organ prolapse surgery (PMC8642346). 2021.Minimal important difference estimates for the PFDI-20 vary by treatment: roughly 13 to 23 points in conservative care cohorts and 24 to 53 points after surgery.
  4. NICE. Urinary incontinence and pelvic organ prolapse in women: management (NG123). 2019.Supervised pelvic floor muscle training of at least 3 months as first-line treatment for stress or mixed urinary incontinence; programmes of at least 8 contractions 3 times a day; bladder training for a minimum of 6 weeks as first-line treatment for urgency or mixed urinary incontinence.
  5. Dumoulin C, Cacciari LP, Hay-Smith EJC. Pelvic floor muscle training versus no treatment, or inactive control treatments, for urinary incontinence in women. Cochrane Database of Systematic Reviews. 2018.31 trials, 1,817 women. Women with stress urinary incontinence doing PFMT were eight times more likely to report cure than controls (56% versus 6%, RR 8.38). Across any type of incontinence, five times more likely (35% versus 6%, RR 5.34).
  6. APTA Pelvic Health. Find a PT.US directory of physical therapists with pelvic health training.

How this article was checked

Written by the Pelvi Health team. Every clinical claim on this page is linked to the guideline or the study it came from, so you can check it yourself, and the numbers are quoted rather than rounded in our favour.

No named clinician has reviewed this article yet. We would rather tell you that than print a doctor’s name we have not earned. Nothing here is a diagnosis or a treatment plan for you specifically, and it is not a substitute for being examined by someone who can put hands on the problem.