It is significantly more accurate, however. It is significantly more accurate, however. Results from trials have varied wildly and show the tests perform better when the swabs are done by trained medics and worse when people do them themselves. Results from trials have varied wildly and show the tests perform better when the swabs are done by trained medics and worse when people do them themselves. However, accuracy fell from 79 per cent when used by experts to 58 per cent when carried out by ordinary people without any training.
The swabs are difficult to make.
( z0 difficult :domain ( z1 make :ARG1 ( z2 swabby ) ) )
(z0 / difficult
    :domain (z1 / make-01
                :ARG1 (z2 / swabby)))
The swabs are difficult to make .
z0 :domain z1
z1 :ARG1 z2