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Table 2 Correlation of CMV shedding from one visit to the next

From: Repeated measures study of weekly and daily cytomegalovirus shedding patterns in saliva and urine of healthy cytomegalovirus-seropositive children

Shedding status by specimen: Positive at current visit/ positive at previous visit (%) Positive at current visit/ negative at previous visit (%) Risk ratio 95% Confidence interval
Weekly visits Urine 37/76 (49) 33/293 (11) 4.3 2.9-6.4
Saliva 211/235 (90) 17/149 (11) 7.9 5.0-12.3
Either specimen 218/245 (90) 18/132 (14) 6.5 4.2-10.1
Daily visits Urine 47/91 (52) 44/354 (12) 4.2 3.0-5.9
Saliva 229/267 (86) 24/174 (14) 6.2 4.3-9.1
Either specimen 235/276 (85) 25/161 (16) 5.5 3.8-7.9