Table 2. Mean absolute percentage difference of excess hospitalization rates from annual hospitalization rates of laboratory confirmed infections in a pediatric cohort.

Lag weeks	Lag 1	Lag 2	Lag 3
Influenza A
sH1N1	52.5	70.9	81.5
H3N2	44.5	62.5	70.0
pH1N1	57.8	68.5	78.5
Influenza B	41.7	62.7	72.5
RSV	62.2	102.6	77.6
Parainfluenza	65.2	94.9	86.4
Adenovirus	65.4	71.6	62.8

Excess rates were estimated from the log-linear Poisson model using a Bayesian approach with the virus proxies of age-specific positive counts at the different lag weeks.