Table 1.

Key economic model inputs and distributions

Description (units)	Median	Source
Daily Wages*		[40]
Working parents/caregivers	$161.69 ($41.88-$345.70)
Teacher	$212.12 ($103.23- $352.62)
Other educational professionals	$336.12 ($190.25- $515.81)
Durations
Work hours per day	8	Assumption
Absenteeism from influenza (days)*	3.2 (1.85- 4.75)	[41]
Days of work missed per week of school closure	5
Percent of infected individuals symptomatic	50%
Probabilities/Ratios*		[42]
Student to teacher ratio	15 to 1
Student to other education professional ratio	78 to 1
Demographic Inputs		[43,44]
Percentage of caretaker households affected by school closure	71.5%
Median number of persons per household under 18	1.9
Case Fatality Percentage (95% CI)		[33]
Age 0-4	0.004% (0.001%-0.011%)
Age 5-17	0.002% (0.000%-0.004%)
Age 18-65	0.010% (0.007%-0.016%)
Age 66-78+	0.010% (0.003%-0.025%)
Outpatient Visit Probability (95% CI)		[45]
Age 0-4	0.455 ± 0.098
Age 5-17	0.318 ± 0.061
Age 18-65	0.313 ± 0.014
Age 66-78+	0.620 ± 0.027
Case Hospitalization Probability (95% CI)		[22]
Age 0-4	0.0033 (0.0021-0.0063)
Age 5-17	0.0011 (0.0008-0.0018)
Age 18-49	0.0015 (0.0011-0.0025)
Age 65+	0.0016 (0.0010-0.0030)
Outpatient Visit Costs (95% CI)
Pediatric	$74.90	[46]
Adult	$104.77 ($69.14-$104.77)	[47]
Elderly	$155.92 ($118.39-$193.44)	[47]
Hospitalization Given Influenza (95% CI)		[48]
Age 1-17	$5,028 ($4,592-$5,464)
Age 18-49	$6,506 ($6,071-$6,941)
Age 50-64	$7,580 ($6,865-$8,295)
Age 66+	$8,004 ($7,460-$8,548)
Death Given Influenza (95% CI)	$7,129 ($5,347 - $9,296)	[49]

*All variables are gamma distributions approximated from normal distributions.