Household caregiver and teacher responses to selected items from school dismissal survey on nonpharmaceutical interventions (NPIs) by school dismissal Status in fall 2009^*, from 48 elementary schools^†, Michigan, USA.

* Schools selected randomly (irrespective of size) from each of the eight public health preparedness regions in Michigan. †Of the 48 schools included in the survey, 13 were reactively dismissed due to student/teacher absenteeism and 35 remained open during the fall 2009. ‡p-Values are calculated based on Pearson's Chi-square test. Differences were considered statistically significant if p<0.0022.