Organisations should no longer collect ‘classic’ or ‘next generation (Medication, Mental Health, Maternity and C&YPS)’ Safety Thermometer data or submit it to the Safety Thermometer portal. Information on replacement metrics drawn from routinely collected data can be found on the Patient Safety Measurement Unit webpage.

The Safety Thermometer, launched in 2010, was one of the largest and longest-lasting data collection exercises in NHS history. It had a powerful impact in its early years. But more recent evaluations, research and feedback have shown that the data was incomplete, and it was no longer able to support improvement in the intended way. Because of this, new data sources were explored that could take the burden of data collection away from clinical staff and support new improvement initiatives. Ending the Safety Thermometer were publicly consulted on in 2019/20 as part of proposed changes to the NHS Standard Contract. The response supported ending the national collection of Safety Thermometer data from April 2020, and using alternative data sources to continue improving pressure ulcer prevention, falls prevention, VTE prevention and prevention of healthcare-associated infection.

All data collection for the ‘classic’ Safety Thermometer and the ‘next generation’ Safety Thermometers will therefore stop after March 2020. Plans for nationally-produced replacement data to support improvement drawn from routinely collected sources will be provided or signposted on the NHS England and NHS Improvement Patient Safety Measurement Unit webpage as soon as possible.

Fields that are collected for the Classic Safety Thermometer Collection.

AGE - 

Collected in 3 age bands


Values: <18, 18-70, >70 


Gender - 

Values: Male, Female


Old Pressure Ulcers -

        An ‘old’ pressure ulcer is defined as being a pressure ulcer that was present when the patient came

        under your care, or developed within 72 hours of admission to your organisation.


Values: None, Cat. 2, Cat 3, Cat 4

New Pressure Ulcers -

        New pressure ulcer developed 72 hours (3 days) or more after admission to organisation

        The Category of the patients worst New pressure ulcers is Recorded


        Values: None, Cat. 2, Cat 3, Cat 4

Patient Falls -

        Any fall that the patient has experienced within the previous 72 Hours in a care setting (including home  
        if the patient is on a district nursing caseload)

        The severity of the fall is defined in accordance with NRLS categories 


        Values: None, No harm, Low harm, Moderate harm, Severe harm, Death

Catheters -

        An indwelling urethral urinary catheter in place at any point in the last 72 hours

        Record the number of days that it has been in place

        If the patient has not had indwelling urethral urinary catheter in place at any point in the last 72 hours,    
        record, No catheter 


        Values: 1-28 days, 28+days, days unknown, no catheter


        Any patient being treated for a UTI

        Record if the treatment started before the patient was admitted to your organisation (Old) or after
        admission to your organisation (New)  

        Treatment for a UTI is based on clinical notes, clinical judgement and patient feedback.


Values: No UTI, Old UTI, New UTI

VTE Assessments

Is there a documented VTE Risk assessment?

Values: No, Yes, N/A

VTE Prophalyaxis

If the patient is at risk has VTE prophylaxis started?


Values: No, Yes, N/A

VTE Treatment

If the patient is being treated for VTE choose the type of VTE.

Use new VTE where treatment for the VTE was started after admission to your organisation.

Use old VTE where treatment for the VTE was started before admission to your organisation.


Values :No VTE,  Old DVT, Old PE, Old Other, New DVT, New PE, New Other