Department summary: Office for National Statistics

How to use this research

Responding to CARS is voluntary. The results presented here are from a self-selecting sample of government analysts. Because respondents are self-selecting, the results we present reflect the views of the analysts who participated.

For more detail, see the data collection page.

Coding frequency and tools

How often analysts are using code at work

We asked respondents “In your current role, how often do you write code to complete your work objectives?”

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Coding frequency Percent
Never 12.6%
Rarely 13%
Sometimes 19.9%
Regularly 24.9%
All the time 29.5%
Sample size = 261

Access to and knowledge of programming languages

Given a list of programming tools, we asked all respondents if the tool was available to use for their work.

Access to tools does not necessarily refer to official policy. Some analysts may have access to tools others cannot access within the same organisation.

Access to coding tools

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Programming tool Yes No Don't Know
Python 94.3% 3.8% 1.9%
R 93.5% 4.2% 2.3%
SQL 55.2% 12.3% 32.6%
Matlab 5.4% 35.2% 59.4%
SAS 37.5% 29.5% 33%
SPSS 37.9% 25.7% 36.4%
Stata 16.5% 29.9% 53.6%
VBA 19.5% 22.2% 58.2%
Sample size = 261

Given the same list of programming tools, all respondents were asked if they knew how to program with the tool to a level suitable for their work, answering “Yes”, “No” or “Not required for my work”.

Please note that capability in programming languages is self-reported here and was not objectively defined or tested. The statement “not required for my work” was similarly not defined.

Knowledge of coding tools

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Programming tool Yes No Not required for my work
Python 57.5% 26.4% 16.1%
R 54.8% 24.1% 21.1%
SQL 39.1% 24.5% 36.4%
Matlab 7.7% 25.3% 67%
SAS 16.1% 26.1% 57.9%
SPSS 26.1% 19.9% 54%
Stata 9.2% 26.1% 64.8%
VBA 7.7% 24.5% 67.8%
Sample size = 261

Access to and knowledge of git

We asked respondents to answer “Yes”, “No” or “Don’t know” for the following questions:

  • Is git available to use in your work?
  • Do you know how to use git to version-control your work?

Please note these outputs include people who do not code at work.

Access to git

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Response Percent
Yes 85.1%
No 3.8%
I don't know 11.1%
Sample size = 261

Knowledge of git

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Response Percent
Yes 64%
No 34.5%
I don't know 1.5%
Sample size = 261

Coding capability and change

Where respondents first learned to code

Respondents with coding experience outside their current role were asked where they first learned to code. Those analysts who code in their current role but reported no other coding experience, are included as having learned ‘In current role’. Those who reported first learning to code outside of a work or educational environment were categorised as ‘self-taught’ based on free-text responses.

These data only show where people first learned to code. They do not show all the settings in which they had learned to code, to what extent, or how long ago.

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Where learned Percent
Current employment 35.5%
Education 46.9%
Previous private sector employment 4.8%
Previous public sector employment 6.1%
Self-taught 4.8%
Other 1.8%
Sample size = 228

Change in coding ability during current role

We asked “Has your coding ability changed during your current role?”

This question was only asked of respondents with coding experience outside of their current role. This means analysts who first learned to code in their current role are not included in the data.

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Ability change Percent
Significantly worse 2%
Slightly worse 6.8%
Stayed the same 11.6%
Slightly better 32%
Significantly better 47.6%
Sample size = 147

Coding practices

We asked respondents who said they currently use code in their work, how often they carry out various coding practices. For more information on the practices presented below, please read our guidance on Quality Assurance of Code for Analysis and Research

Open sourcing was defined as ‘making code freely available to be modified and redistributed’

Consistency of good coding practices

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Statement I don't understand this question (%) Never (%) Rarely (%) Sometimes (%) Regularly (%) All the time (%)
Automated data quality assurance 4.8% 18% 14.9% 25.9% 19.7% 16.7%
Code review 1.3% 6.6% 7% 30.7% 30.3% 24.1%
Coding guidelines / Style guides 6.1% 7% 7.9% 28.1% 27.6% 23.2%
Functions 3.9% 6.6% 9.6% 25.4% 25.9% 28.5%
Open source own code 20.2% 38.2% 13.6% 13.2% 8.8% 6.1%
Packaging code 13.2% 43.4% 16.2% 10.5% 9.2% 7.5%
Proportionate quality assurance 14% 5.3% 5.3% 11.8% 35.1% 28.5%
Quality assurance throughout development 6.6% 6.1% 4.8% 18% 38.6% 25.9%
Standard directory structure 25.4% 11.4% 10.5% 16.7% 18.9% 17.1%
Unit testing 21.9% 22.8% 13.6% 16.7% 16.2% 8.8%
Use open source software 1.8% 3.5% 7.9% 11.8% 24.6% 50.4%
Version control 3.5% 19.7% 9.2% 15.8% 22.8% 28.9%
Sample size = 228

Documentation

We asked respondents who reported writing code at work how frequently they write different forms of documentation when programming in their current role.

Embedded documentation is one of the components which make up a RAP minimum viable product. Documentation is important to help others be clear on how to use the product and what the code is intended to do.

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Statement I don't understand this question (%) Never (%) Rarely (%) Sometimes (%) Regularly (%) All the time (%)
Analytical Quality Assurance (AQA) logs 21.5% 38.2% 11% 16.2% 8.8% 4.4%
Code comments 1.8% 3.9% 1.3% 10.1% 30.3% 52.6%
Data or assumptions registers 23.2% 40.8% 10.1% 12.7% 6.1% 7%
Desk notes 9.6% 18.4% 9.6% 28.5% 19.3% 14.5%
Documentation for each function or class 8.8% 24.1% 11% 16.7% 19.3% 20.2%
Flow charts 6.1% 35.5% 14.5% 26.3% 10.5% 7%
README files 6.1% 29.4% 13.6% 21.5% 14.9% 14.5%
Sample size = 228

Dependency Management

We asked respondents who reported writing code at work if they manage dependencies for their projects.

We provided examples of tools that may be used for dependency management:

  • Requirements files, e.g. python requirements.txt or R DESCRIPTION files
  • Virtual environments (e.g. venv or renv) or virtual machines
  • Containers e.g. Docker
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Use dependency management software Percent
Yes 28.1%
No 28.5%
I don't know what dependency management is 43.4%
Sample size = 228

Continuous integration

We asked respondents who reported writing code at work if they use continuous integration.

We provided some examples of continuous integration technologies:

  • GitHub actions
  • Jenkins
  • Travis
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Use continuous integration Percent
Yes 21.1%
No 39%
I don't know what continuous integration is 39.9%
Sample size = 228

Reproducible workflow packages

We asked respondents who reported writing code at work whether they use reproducible workflow packages.

We provided some examples of packages:

  • drake
  • make
  • pymake
  • targets
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Use reproducible workflow packages Percent
Yes 5.3%
No 54.4%
I don't know what reproducible workflows are 40.4%
Sample size = 228

Reproducible analytical pipelines (RAP)

We asked respondents about their knowledge of and opinions on reproducible analytical pipelines (RAP). RAP refers to the use of practices from software engineering to make analysis more reproducible. These practices build on the advantages of writing analysis as code by ensuring increased quality, trust, efficiency, business continuity and knowledge management.

The RAP champions are a network of analysts across government who promote and support RAP development in their departments. Please contact the analysis standards and pipelines team for any enquiries about RAP or the champions network.

The Analysis Function RAP strategy was released in June 2022 and sets out plans for adopting RAP across government.

Knowledge of RAP

We asked respondents who reported writing code at work, if they had heard of RAP.

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Knowledge Percent
Yes 98.2%
No 1.8%
Sample size = 228

RAP Champions

We asked respondents who had heard of RAP, if their department has a RAP champion and if they know who it is.

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Knowledge Percent
Yes, and I am a RAP Champion 2.7%
Yes, and I know who the RAP Champion is 22.8%
Yes, but I don't know who the RAP Champion is 23.7%
No 1.8%
I don't know 49.1%
Sample size = 224

Awareness of RAP strategy

We asked respondents who had heard of RAP, if they had heard of the RAP strategy.

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RAP strategy knowledge Percent
Yes 35.7%
Yes, but I haven't read it 36.6%
No 27.7%
Sample size = 224

Opinions on RAP

We asked respondents who had heard of RAP whether they agreed with a series of statements.

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Statement Strongly Disagree (%) Disagree (%) Neutral (%) Agree (%) Strongly Agree (%)
I and/or my team are currently implementing RAP 11.2% 21.9% 23.7% 23.7% 19.6%
I feel confident implementing RAP in my work 7.6% 21% 24.6% 29% 17.9%
I feel supported to implement RAP in my work 7.1% 14.3% 25.4% 37.1% 16.1%
I know where to find resources to help me implement RAP 8.5% 15.2% 18.8% 36.2% 21.4%
I or my team are planning on implementing RAP in the next 12 months 7.1% 9.4% 28.6% 29% 25.9%
I think it is important to implement RAP in my work 3.1% 4.5% 14.7% 35.7% 42%
I understand what the key components of the RAP methodology are 5.8% 17.9% 17.4% 38.4% 20.5%
Sample size = 224

RAP scores

In this section we present RAP components and RAP scores.

For each RAP component a percent positive was calculated. Positive responses were recorded where an answer of “regularly” or “all the time” was given. For documentation, a positive response was recorded if both code comments and README files questions received positive responses. For the continuous integration and dependency management components, responses of “yes” were recorded as positive.

“Basic” components are the components which make up the RAP MVP. “Advanced” components are components which help improve reproducibility, but are not considered part of the minimum standard.

RAP components

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RAP component Type Percentage of analysts who code in their work
Use open source software Basic 75%
Proportionate QA Basic 63.6%
Peer review Basic 54.4%
Version control Basic 51.8%
Documentation Basic 27.6%
Team open source code Basic 14.9%
Functions Advanced 54.4%
Follow code style guidelines Advanced 50.9%
Function documentation Advanced 39.5%
Dependency management Advanced 28.1%
Unit testing Advanced 25%
Continuous integration Advanced 21.1%
Code packages Advanced 16.7%
Sample size = 228