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Home > Preliminary breath tests conducted in Northern Ireland, 2010 - 2019.

PSNI Statistics Branch. (2020) Preliminary breath tests conducted in Northern Ireland, 2010 - 2019. Belfast: PSNI Statistics Branch.

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URL: https://www.psni.police.uk/inside-psni/Statistics/...


  • Between 2018 and 2019, the number of PBTs carried out by the PSNI increased by 10%, from 35,994 to 39,489, with the majority of increase in December 2019.
  • The proportion of ‘positive’ or ‘failed to provide’ PBTs has remained fairly consistent since 2010, ranging from 9% to 12%.
  • The highest proportion of ‘positive’ or ‘failed to provide’ PBTs was recorded on a Sunday.
  • The highest proportion of ‘positive’ or ‘failed to provide’ PBTs was recorded between 3:00am and 6:00am.
  • The most recent data available for England and Wales relates to 2018 and shows that there were 6 PBTs per 1,000 population and 12 PBTs per 1,000 population respectively. The corresponding figure for Northern Ireland for 2018 was 19 PBTs per 1,000 population.

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