Table 5

Mean pH in products purchased in England and the USA

OverallNMeanLower CIUpper CIMinimumMaximumFP value
No nicotine detected474.<0.001
Nicotine detected1878.
USA only
 No nicotine detected94.<0.001
 Nicotine detected458.
England only
 No nicotine detected135.<0.001
 Nicotine detected1328.
 No organic acids detected1897.
 Organic acids detected457.
USA only
 No organic acids detected527.
 Organic acids detected28.
England only
 No organic acids detected1148.<0.001
 Organic acids detected417.