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IPSS (International Prostate Symptom Score)

A 7-question questionnaire about urinary symptoms in the last month. Classifies lower urinary tract symptom severity and tracks treatment response in benign prostatic hyperplasia.

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Check the population, units and version. The result shows the formula or classification; it does not make an automatic treatment decision.

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Method · Limits of application

AUASI/Barry 1992, IPSS 7 items 0–5, total 0–35; quality of life 8th item separate

IPSS/AUA quantifies urinary symptoms and their evolution, but the total does not establish benign prostatic hyperplasia as the cause. The original validation included people with BPH and controls. Wording, time window, quality of life and limitations of the language version must be preserved and checked separately.

Required fields: 0/7 completed

Complete all required fields. Optional fields are marked.

Incomplete emptying: feeling that the bladder has not emptied completely required

Frequency: needing to urinate again less than 2 hours later required

Intermittency: the urine stream stopped and started several times required

Urgency: difficulty postponing urination required

Weak urine stream required

Straining: needing to push to begin urinating required

Nocturia: how many times you got up at night to urinate required

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Conditions of use

Check the population, units, inclusion and exclusion criteria, and version in the original source. A result alone does not establish a diagnosis, discharge decision or prescription.

Documented parameters

Incomplete emptying: feeling that the bladder has not emptied completely
Frequency: needing to urinate again less than 2 hours later
Intermittency: the urine stream stopped and started several times
Urgency: difficulty postponing urination
Weak urine stream
Straining: needing to push to begin urinating
Nocturia: how many times you got up at night to urinate

3/3 reference cases checked. Numerical tests are not clinical validation.

Sources and documentation

Documented formula

Transcribed from the source or a recorded revision; this is not a clinical recommendation.

Seven questions about the last month, each scored 0 to 5. Total 0 to 35.

The 8th question (quality of life, from 0 "delighted" to 6 "terrible") is recorded separately and not included in the sum.

References

Identifier: ipss

Original clinical content: Brazilian Portuguese.

Method version

AUASI/Barry 1992, IPSS 7 items 0–5, total 0–35; quality of life 8th item separate

ipss@native-2026-10-03+335195db0825

Source for the active edition

The bibliographic edition identifies the source. By itself, it proves neither full conformity of the formula nor clinical approval.

Synthetic cases checked (3)

Synthetic cases for checking the implementation, with no patient data.

Case 1

reference-001

Inputs

Incomplete emptying: feeling that the bladder has not emptied completely: Less than 1 time in 5
Frequency: needing to urinate again less than 2 hours later: Less than 1 time in 5
Intermittency: the urine stream stopped and started several times: Less than 1 time in 5
Urgency: difficulty postponing urination: Less than 1 time in 5
Weak urine stream: Less than 1 time in 5
Straining: needing to push to begin urinating: Less than 1 time in 5
Nocturia: how many times you got up at night to urinate: 1 time

{
  "esvaz": "1",
  "freq": "1",
  "inter": "1",
  "urg": "1",
  "jato": "1",
  "esforco": "1",
  "noct": "1"
}

Expected result

{
  "score": 7,
  "level": "low"
}

Actual result

{
  "score": 7
}

Case 2

reference-002

Inputs

Incomplete emptying: feeling that the bladder has not emptied completely: Less than 1 time in 5
Frequency: needing to urinate again less than 2 hours later: Less than 1 time in 5
Intermittency: the urine stream stopped and started several times: Less than 1 time in 5
Urgency: difficulty postponing urination: Less than 1 time in 5
Weak urine stream: Less than 1 time in 5
Straining: needing to push to begin urinating: Less than 1 time in 5
Nocturia: how many times you got up at night to urinate: 2 times

{
  "esvaz": "1",
  "freq": "1",
  "inter": "1",
  "urg": "1",
  "jato": "1",
  "esforco": "1",
  "noct": "2"
}

Expected result

{
  "score": 8,
  "level": "mid"
}

Actual result

{
  "score": 8
}

Case 3

reference-003

Inputs

Incomplete emptying: feeling that the bladder has not emptied completely: About half the time
Frequency: needing to urinate again less than 2 hours later: About half the time
Intermittency: the urine stream stopped and started several times: About half the time
Urgency: difficulty postponing urination: About half the time
Weak urine stream: About half the time
Straining: needing to push to begin urinating: About half the time
Nocturia: how many times you got up at night to urinate: 3 times

{
  "esvaz": "3",
  "freq": "3",
  "inter": "3",
  "urg": "3",
  "jato": "3",
  "esforco": "3",
  "noct": "3"
}

Expected result

{
  "score": 21,
  "level": "high"
}

Actual result

{
  "score": 21
}

Code and reproducibility

This tool’s code on GitHub

Download code and tests

Sources, version and reproduction instructions

The code tests are technical checks. Clinical approval and professional translation review are recorded separately.

Relationship with cancer research

General context — relationship to be defined

A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.