Criminology: Crime Measurement and PNP Statistics

The systematic estimation and description of criminal incidents, offenders, victims, and crime-related patterns using defined indicators and data sources.

An incident classified and entered into official police records according to applicable reporting and recording procedures.

The number of recorded or estimated crime incidents occurring within a specified area and time period.

Incidence is a count of incidents; a crime rate expresses incidents relative to a specified population or exposure measure.

A selected group of offenses used as indicators for monitoring and comparing crime patterns; its composition depends on the reporting system.

Murder, homicide, physical injury, rape, robbery, theft, carnapping of motor vehicles, and carnapping of motorcycles.

A recorded offense outside the designated index crime categories, including violations of other penal or special laws.

Different time windows can produce misleading comparisons because incident counts and exposure periods vary.

The direction or pattern of change in crime indicators across successive periods.

A recurring pattern in crime levels associated with particular seasons, months, holidays, or other periodic conditions.

A reference level or historical pattern used to assess whether current crime indicators are unusually high or low.

The PNP records, consolidates, and reports police crime data used for operational monitoring and public crime assessments.

To support recording, consolidation, retrieval, and analysis of crime incident information within the PNP reporting framework.

It promotes more consistent classification, documentation, and comparison of recorded incidents across reporting units.

An official entry documenting a reported or detected incident and relevant details under applicable police recording procedures.

The failure of some actual criminal incidents to reach or appear in the relevant reporting system.

The failure to enter or correctly classify incidents in official records despite their being reported or otherwise known to authorities.

Recorded incidents may rise or fall even when the underlying frequency of crime changes little.

Changes in definitions, data capture, coverage, or recording practices can create apparent trends unrelated to actual crime changes.

The percentage of recorded crime incidents classified as cleared under the reporting system's applicable clearance criteria.

The percentage of recorded crime incidents classified as solved under the reporting system's applicable solution criteria.

A cleared case meets prescribed identification and evidentiary conditions even if the suspect is not yet taken into custody; a solved case additionally meets the applicable requirements concerning the offender and filing of charges.

Administrative criteria and reporting procedures can change, affecting how cases qualify for each classification.

The total number of recorded crime incidents included in the applicable reporting calculation.

Solution rates describe case outcomes relative to recorded incidents, while crime rates measure incident frequency relative to a population or exposure.

The geographic representation and analysis of crime incidents or related indicators to identify spatial patterns.

A system for storing, managing, analyzing, and displaying information linked to geographic locations.

Converting addresses or location descriptions into geographic coordinates or mapped locations.

A location or area exhibiting a relatively high concentration of crime incidents or risk during a specified period.

The identification and examination of locations where crime is disproportionately concentrated.

A map showing individual incident locations as geographic points.

A map using shading or graduated symbols to represent crime indicators aggregated within geographic areas.

A spatial smoothing technique used to estimate the geographic concentration of recorded events from their locations.

The tendency for values observed at nearby locations to be more similar or dissimilar than expected under a specified spatial model.

Nearby areas tend to have similar values, such as clusters of relatively high or relatively low crime rates.

The possibility that statistical results change when geographic boundaries or aggregation scales are altered.

A count map displays numbers of incidents; a rate map adjusts incidents for a defined population or exposure denominator.

Large numbers of visitors and transactions can increase incident counts, making exposure-adjusted comparisons necessary.

The examination of crime patterns by time of day, day of week, month, season, or longer period.

The combined examination of where and when crime incidents occur.

A shift in offending to another place, time, target, method, or offense type following an intervention.

A reduction in offending beyond the locations or targets directly covered by a preventive intervention.

An examination of places experiencing multiple incidents to identify recurring opportunities or environmental conditions.

To communicate relevant crime patterns, emerging risks, and analytical findings to personnel or decision-makers.

Detailed locations or associated attributes may reveal victims' identities or expose vulnerable individuals to further harm.

A 15% decrease, calculated as (425 minus 500) divided by 500 multiplied by 100.

75%, calculated as 150 divided by 200 multiplied by 100.

75%, calculated as 180 divided by 240 multiplied by 100.

Spatiotemporal hot spot analysis, combining incident location and time.

Geographic crime displacement, while considering other explanations for the observed changes.