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Table 3 Estimated cases prevented (with 95% CI where applicable)

From: Cost-effectiveness of a whole-area testing pilot of asymptomatic SARS-CoV-2 infections with lateral flow devices: a modelling and economic analysis study

Description

n

Actual case count

2900

LFD test performed during mass testing

48,834

- of which were in the Merthyr Tydfil LA

33,823

- of which were asymptomatic and tested positive

712

– of which had a confirmatory PCR test result

528

– of which had no confirmatory PCR test

173

— of which were estimated to be true positives from PPV

169

- of which are true positives (PCR-confirmed + estimated from PPV)

697

– of which were estimated to remain asymptomatic

391

– of which were estimated to become symptomatic

306

— of which were estimated to still contribute to infections

62

Infectious cases identified not otherwise identifiable

453

1st generation infections prevented

169 ( 156—182)

2nd and higher generation infections prevented

192 ( 156—236)

Total estimated number of prevented cases

360 ( 311—418)