Within Missing Context
What 'Up' Leaves Out of the Story
Words like 'surge', 'record', and 'highest since' only make sense when the starting point is visible.
On this page
- The baseline problem in trend claims
- How time windows exaggerate or minimise change
- How to compare risk claims more fairly
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Introduction
When a post claims that crime has “surged”, that a danger is at a “record high”, or that a behaviour “doubles your risk”, the most important number is often the one that is missing. These claims depend on a baseline: the starting level against which change is measured. Without that baseline, readers can be persuaded by the direction of a trend without understanding its size, significance or context.
This matters especially on social media, where short messages reward dramatic comparisons. A crime category can be at a record high while overall crime remains far below historical peaks. A risk can double while remaining extremely small in absolute terms. Critical thinking requires restoring the hidden comparison that gives the claim meaning.
The Baseline Problem in Trend Claims
A baseline is the reference point from which a change is measured. Every statement that something is “up”, “down”, “higher”, “lower”, or “more dangerous” depends on one.
Consider three headlines:
- Crime is up 25%.
- Knife offences are at a record level.
- This exposure doubles your risk.
All three sound alarming. Yet none tells the reader the starting point.
A rise from 4 incidents to 5 is also a 25% increase. A “record level” may refer to a dataset that began only a few years ago. A doubled risk may mean moving from a 1-in-10,000 chance to a 2-in-10,000 chance. The direction of change is real, but the scale can be misunderstood when the baseline remains hidden. Research on risk communication consistently finds that people interpret relative changes as more important when baseline information is omitted. Providing the baseline produces more accurate judgments of the underlying risk. [CentAUR+2ResearchGate]centaur.reading.ac.ukEffects of presenting the baseline risk when communicating…by H Natter · 2005 · Cited by 47 — The results showed that, in the a…
The effect is powerful because people naturally focus on movement rather than starting position. “Up 50%” feels substantial even before anyone asks, “Up from what?”
How Time Windows Exaggerate or Minimise Change
One of the easiest ways to shape perception is to choose a particular starting date.
A claim that crime is “the highest since 2020” creates a different impression from a claim that crime remains well below levels seen in the 1990s. Both statements may be factually correct. The difference lies in the baseline.
Crime statistics provide many examples. Some offence categories have increased sharply in recent years, generating accurate headlines about records or surges. Yet broader measures from the Crime Survey for England and Wales show that several major crime categories remain far below levels recorded decades earlier. Long-term trends and short-term trends can point in different directions at the same time. [Policing Insight+2Office for Statistics Regulation]policinginsight.comPolicing Insight Most crime has fallen by 90% in 30 years – so why doesPolicing InsightMost crime has fallen by 90% in 30 years – so why does…May 23, 2024 — 23 May 2024 — As of 2024, violence, burglary and…
The same pattern appears in public perceptions. Surveys have found that many people believe crime is much higher than it was a generation ago, despite long-term declines in several major categories measured by the Crime Survey. [Sentencing Academy]sentencingacademy.org.ukSentencing Academy Public Knowledge of Sentencing Practice and Trends25 years ago: 30% chose 'a lot higher', 32% 'somewhat higher'. In fact, although rates have been…Read more…
Why “Highest Since” Can Mislead
The phrase “highest since” sounds objective, but it hides a crucial question: why that starting year?
Suppose a statistic is described as the highest since 2019. That framing quietly excludes everything before 2019. If the series reached much higher levels in 2005, the phrase creates a stronger impression than a longer historical comparison would.
This does not mean such claims are false. It means readers should immediately ask:
- Why was that particular year chosen?
- What happens if the comparison goes back further?
- Is the current level unusual in a five-year view, a twenty-year view, or both?
The answer often changes the story.
Record Highs and Record Lows Depend on the Record
“Record” sounds absolute, but records depend on the period being measured.
For example, media reports have accurately described shoplifting in England and Wales as reaching record levels under current recording systems. Yet the record refers to a specific period of data collection and reporting. Understanding what counts as the record is essential before concluding that a phenomenon has never been worse. [The Times]thetimes.co.ukshoplifting offences record high reported police q8fbk29gbRetailers believe actual numbers are higher due to underreporting. Knife-related crimes also surged, approaching pre-pandemic levels, wit…
The baseline is not merely a technical detail. It determines whether a trend appears exceptional or routine.
Crime Statistics Often Depend on Hidden Measurement Baselines
Crime claims contain another layer of baseline problems: changes in measurement systems.
Readers often assume that a crime statistic represents a direct count of all crime. In reality, crime figures can be affected by reporting behaviour, police recording practices, survey methods and classification rules. Official statistical bodies routinely caution that different crime measures answer different questions. Office for Statistics Regulation+2Office for National Statistics [osr.statisticsauthority.gov.uk]osr.statisticsauthority.gov.ukunderstanding the complexities of crime statisticsOffice for Statistics RegulationUnderstanding the complexities of crime statistics16 May 2024 — In this blog, our Head Statistics Regulat…
In the United States, transitions between crime-recording systems have complicated comparisons across years. Analysts have warned that changes in FBI reporting methods can affect how trends appear in national statistics. [Brennan Center for Justice+2FBI]brennancenter.orgunderstanding fbis 2021 crime dataBrennan Center for JusticeUnderstanding the FBI's 2021 Crime Data4 Oct 2022 — Changes to the way the FBI reports national crime data may…
Similarly, England and Wales use both police-recorded crime data and survey-based measures, each with strengths and limitations. A rise in recorded offences may reflect genuine increases, improved reporting, changes in recording standards, or some combination of all three. [Office for National Statistics]ons.gov.ukOffice for National StatisticsUser guide to crime statistics for England and WalesThis user guide provides detailed information on the da…
This means that even when the baseline year is visible, the measurement baseline may still be hidden.
How Relative Risk Makes Small Dangers Look Large
Risk claims frequently rely on relative rather than absolute comparisons.
Relative risk describes proportional change. Absolute risk describes the actual chance of an outcome occurring.
Imagine a risk rising from 1 person in 10,000 to 2 people in 10,000.
- Relative risk increase: 100%. [researchgate.net]researchgate.netEffects of presenting the baseline risk when communicating…This study compares relative and absolute forms of presenting risk informat…
- Absolute risk increase: 1 additional case per 10,000 people.
Both figures are mathematically correct. Yet they create very different impressions. Researchers and risk-communication specialists repeatedly recommend presenting both measures because relative risk alone can exaggerate perceived importance. [RCOG+3PMC+3SMC España]pmc.ncbi.nlm.nih.govUnderstanding and Communicating Risk: Assessing Both…by S Zavala · 2022 · Cited by 10 — Relative and absolute risk measures are com…
This is one reason why headlines about health risks, environmental dangers or crime victimisation can seem more alarming than the underlying numbers justify. The baseline probability is hidden, leaving readers with only the dramatic percentage change.
A Practical Reader Test
Whenever you encounter a risk claim, ask:
- What is the original level of risk?
- How many people are affected in absolute numbers?
- Is the change large in practical terms or only in percentage terms?
- Over what period was the risk measured?
If those questions cannot be answered, the claim is incomplete.
How to Compare Risk Claims More Fairly
The most reliable defence against misleading trend claims is to restore the missing baseline.
When evaluating crime and risk statistics: [counciloncj.org]counciloncj.orgCouncil on Criminal JusticeWhen Crime Statistics DivergeThis report highlights key differences between the nation's two measures of crime…
Look for rates as well as counts.
A city with more crime incidents may simply have more people. Population context often changes interpretations of raw numbers. [arXiv]arxiv.orgMore crime in cities? On the scaling laws of crime and the inadequacy of per capita rankings – a cross-country studyDecember 30, 2020…
Compare multiple time horizons.
Check whether a trend is being measured against last month, last year, five years ago or several decades ago. Different baselines can produce very different narratives. [Policing Insight]policinginsight.comPolicing Insight Most crime has fallen by 90% in 30 years – so why doesPolicing InsightMost crime has fallen by 90% in 30 years – so why does…May 23, 2024 — 23 May 2024 — As of 2024, violence, burglary and…
Ask what changed in the measurement system.
Changes in reporting rules, survey methods or recording practices can influence apparent trends. Office for Statistics Regulation+2Brennan Center for Justice [osr.statisticsauthority.gov.uk]osr.statisticsauthority.gov.ukunderstanding the complexities of crime statisticsOffice for Statistics RegulationUnderstanding the complexities of crime statistics16 May 2024 — In this blog, our Head Statistics Regulat…
Seek absolute risk alongside relative risk. [researchgate.net]researchgate.netEffects of presenting the baseline risk when communicating…This study compares relative and absolute forms of presenting risk informat…
A percentage increase is meaningful only when paired with the starting probability. [PMC+2iwh.on.ca]pmc.ncbi.nlm.nih.govUnderstanding and Communicating Risk: Assessing Both…by S Zavala · 2022 · Cited by 10 — Relative and absolute risk measures are com…
Treat emotionally charged words as prompts for questions.
Terms such as “surge”, “record”, “explosion”, “epidemic” and “doubling” should trigger curiosity about the comparison point rather than immediate acceptance of the implied conclusion.
What “Up” Often Leaves Out
Many persuasive crime and risk claims rely less on false information than on incomplete information. The missing baseline acts like a hidden lens that changes how readers interpret the numbers.
Once the baseline is restored, the meaning of a claim often becomes clearer. A surge may be modest. A record may be recent rather than historic. A doubled risk may still be rare. Conversely, some risks remain serious even after context is added. The goal is not to minimise problems but to understand them accurately.
In an information environment dominated by rapid sharing, short-form content and AI-assisted summaries, asking “Compared with what?” is one of the simplest and most effective critical-thinking habits a reader can develop.
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Endnotes
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Source: researchgate.net
Link: https://www.researchgate.net/publication/247497648_Effects_of_presenting_the_baseline_risk_when_communicating_absolute_and_relative_risk_reductionsSource snippet
Effects of presenting the baseline risk when communicating...This study compares relative and absolute forms of presenting risk informat...
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Source: pmc.ncbi.nlm.nih.gov
Link: https://pmc.ncbi.nlm.nih.gov/articles/PMC8844685/Source snippet
Understanding and Communicating Risk: Assessing Both...by S Zavala · 2022 · Cited by 10 — Relative and absolute risk measures are com...
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Source: fbi.gov
Link: https://www.fbi.gov/how-we-can-help-you/more-fbi-services-and-information/ucr/nibrsSource snippet
in the same incident—including information on victims, known offenders...Read more...
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Source: iwh.on.ca
Link: https://www.iwh.on.ca/what-researchers-mean-by/absolute-and-relative-riskSource snippet
Absolute and relative riskRisk expressed either way is correct. In our example, the relative risk reduction of 60 per cent appears larger...
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Source: rcog.org.uk
Title: cga7 15072010
Link: https://www.rcog.org.uk/media/i1udpf05/cga7-15072010.pdf -
Source: arxiv.org
Link: https://arxiv.org/abs/2012.15368Source snippet
More crime in cities? On the scaling laws of crime and the inadequacy of per capita rankings -- a cross-country studyDecember 30, 2020...
Published: December 30, 2020
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Source: ucr.fbi.gov
Title: a guide to understanding nibrs
Link: https://ucr.fbi.gov/nibrs/2011/resources/a-guide-to-understanding-nibrsSource snippet
Guide to Understanding NIBRSNIBRS is an incident-based reporting system in which law enforcement collects data on each crime occurrence...
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Source: fbi.gov
Link: https://www.fbi.gov/video-repository/nibrs-101.mp4/view -
Source: centaur.reading.ac.uk
Link: https://centaur.reading.ac.uk/13902/Source snippet
Effects of presenting the baseline risk when communicating...by H Natter · 2005 · Cited by 47 — The results showed that, in the a...
-
Source: policinginsight.com
Title: Policing Insight Most crime has fallen by 90% in 30 years – so why does
Link: https://policinginsight.com/feature/analysis/most-crime-has-fallen-by-90-in-30-years-so-why-does-the-public-think-its-increased/Source snippet
Policing InsightMost crime has fallen by 90% in 30 years – so why does...May 23, 2024 — 23 May 2024 — As of 2024, violence, burglary and...
Published: May 23, 2024
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Source: osr.statisticsauthority.gov.uk
Title: understanding the complexities of crime statistics
Link: https://osr.statisticsauthority.gov.uk/blog/understanding-the-complexities-of-crime-statistics/Source snippet
Office for Statistics RegulationUnderstanding the complexities of crime statistics16 May 2024 — In this blog, our Head Statistics Regulat...
Published: May 2024
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Source: ons.gov.uk
Link: https://www.ons.gov.uk/peoplepopulationandcommunity/crimeandjustice/methodologies/userguidetocrimestatisticsforenglandandwalesSource snippet
Office for National StatisticsUser guide to crime statistics for England and WalesThis user guide provides detailed information on the da...
-
Source: sentencingacademy.org.uk
Title: Sentencing Academy Public Knowledge of Sentencing Practice and Trends
Link: https://www.sentencingacademy.org.uk/wp-content/uploads/2025/08/Public-Knowledge-of-Sentencing-Practice-and-Trends.pdfSource snippet
25 years ago: 30% chose 'a lot higher', 32% 'somewhat higher'. In fact, although rates have been...Read more...
-
Source: thetimes.co.uk
Title: shoplifting offences record high reported police q8fbk29gb
Link: https://www.thetimes.co.uk/article/shoplifting-offences-record-high-reported-police-q8fbk29gbSource snippet
Retailers believe actual numbers are higher due to underreporting. Knife-related crimes also surged, approaching pre-pandemic levels, wit...
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Source: thetimes.co.uk
Link: https://www.thetimes.co.uk/article/half-a-million-shoplifting-offences-recorded-by-police-for-first-time-n855fzl6nSource snippet
Shoplifting offences surpassed half a million for the first time, rising 20% from 2023 to 516,971 incidents—the highest since police reco...
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Source: brennancenter.org
Title: understanding fbis 2021 crime data
Link: https://www.brennancenter.org/our-work/research-reports/understanding-fbis-2021-crime-dataSource snippet
Brennan Center for JusticeUnderstanding the FBI's 2021 Crime Data4 Oct 2022 — Changes to the way the FBI reports national crime data may...
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Source: sciencemediacentre.es
Title: how communicate risks reported scientific articles understandable way
Link: https://sciencemediacentre.es/en/how-communicate-risks-reported-scientific-articles-understandable-waySource snippet
An alternative...Read more...
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Source: pmc.ncbi.nlm.nih.gov
Link: https://pmc.ncbi.nlm.nih.gov/articles/PMC10798435/Source snippet
J Uttley · 2024 · Cited by 11 — We will use these data to determine whether the risk of crime at a specific time of day is greate...
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Source: GOV.UK
Link: https://www.gov.uk/government/collections/crime-statisticsSource snippet
statisticsPolice recorded crime and outcomes open data tables. Police recorded crime and outcomes detailed figures and supplementary mate...
Additional References
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Source: bjs.ojp.gov
Link: https://bjs.ojp.gov/data-collection/national-incident-based-reporting-system-nibrsSource snippet
Bureau of Justice StatisticsNational Incident-Based Reporting System (NIBRS)Background on the collection of reported crime dataSince 1930...
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Source: regulation.org.uk
Link: https://www.regulation.org.uk/library/dh_risk_comms_advice.pdfSource snippet
COMMUNICATING ABOUT RISKS TO PUBLIC HEALTHCommunicating about risks to public health can be of vital importance in many different context...
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Source: counciloncj.org
Link: https://counciloncj.org/when-crime-statistics-diverge/Source snippet
Council on Criminal JusticeWhen Crime Statistics DivergeThis report highlights key differences between the nation's two measures of crime...
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Source: riskknowhow.org
Link: https://riskknowhow.org/make-sense-of-risk/resources/relative-vs-absolute-risks-why-relative-risks-are-misleading-and-how-to-communicate-absolute-risks/Source snippet
Understand relative vs absolute risksDavid Spiegelhalter explaining why relative risks are misleading, and how to communicate absolute ri...
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Source: unodc.org
Link: https://www.unodc.org/documents/data-and-analysis/Crime-statistics/International_Statistics_on_Crime_and_Justice.pdfSource snippet
soon after the shift of the year, but statistics on later stages of the criminal...Read more...
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Source: cde.ucr.cjis.gov
Link: https://cde.ucr.cjis.gov/LATEST/resources/reports/UCR%20Summary%20of%20Reported%20Crimes%20in%20the%20Nation%202024.pdfSource snippet
An estimated 1,221,345 violent crime offenses were committed in 2024, indicating a rate of. 359.1 violent crimes...Read more...
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Source: naacpldf.org
Link: https://www.naacpldf.org/the-truth-behind-crime-statistics/Source snippet
o explain the recent increase in homicides nationwide.Read more...
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Source: youtube.com
Title: Why Crime Data Is Lying To You (And What It Means for Your Safety) | EP09
Link: https://www.youtube.com/watch?v=-S5hEfsFtAMSource snippet
Misleading crime stats FBI veteran reveals what's really happening in DC...
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Source: waspc.org
Title: National Incident-Based Reporting System (NIBRS) versus
Link: https://www.waspc.org/assets/CJIS/trainingmanualsandreference/nibrsvssummaryoverview.pdfSource snippet
1930's. Summary UCR Offenses. Part 1: Murder. Rape. Robbery.Read more...
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Source: vera-institute.files.svdcdn.com
Title: understanding national crime data
Link: https://vera-institute.files.svdcdn.com/production/downloads/publications/understanding-national-crime-data.pdfSource snippet
▫ The U.S. Department of Justice's (DOJ's) Bureau of Justice Statistics (BJS), through the...Read more...
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