A country that only tests people admitted to hospital will have a higher positive value in % of tests than a country that tests all citizens, whether or not they have symptoms, other factors being the same.
Nchi inayopima watu waliolazwa hospitalini pekee itakuwa na idadi ya juu ya visa vya ugonjwa kama % ya vipimo kuliko nchi inayopima wananchi wote, iwe wanaonyesha dalili au la, mambo mengine yakiwa sawa.