Table I.

Summary of faecal samples used for inter-rater reliability testing

Positive Clostridioides difficile faecal samples from patients	Number (n)
By PCR	32
PCR CTa range	23.88–38.4
PCR CT average	31.5
By Quik Chek™	34
By Culture	27
By PCR and Quik Chek™	32
By PCR and culture	22
By Quik Chek™ and culture	23
Positive by all three methods	22
Positive by any method	38
Negative C. difficile faecal samples from patients
By PCR	117
By Quik Chek™	115
By Culture	122
By all methods	111
Blank containers	115

PCR, polymerase chain reaction.

^aCT, cycle threshold, i.e. the number of cycles for the signal to exceed the background level.