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Table 2 Summary of the different data aggregation types under consideration for use in epidemic detection methods

From: Methods for detecting seasonal influenza epidemics using a school absenteeism surveillance system

Data Type Description Mean 95% CI
Elementary (ES)    
ES-top Daily absenteeism for the elementary school that reported the most days throughout the study period. 8.34% (7.89%, 8.79%)
ES-3avg Daily absenteeism averaged over the three elementary schools that reported the most days throughout the study period. 6.39% (5.96%, 6.82%)
ES-allavg Daily absenteeism averaged over all the elementary schools that reported. 5.94% (5.58%, 6.31%)
Secondary (SS)    
SS-top Daily absenteeism from the secondary school that reported the most days throughout the study period. 3.35% (3.17%, 3.53%)
SS-3avg Daily absenteeism averaged over the three secondary schools that reported the most days throughout the study period. 8.15% (7.06%, 9.40%)
SS-allavg Daily absenteeism averaged over all the secondary schools that reported. 7.76% (6.96%, 8.55%)
ES.SS-allavg Daily absenteeism averaged across all elementary and secondary schools that reported. 6.19% (5.83%, 6.56%)
  1. The sample means and bootstrapped (R = 10000) percentile 95% confidence intervals are given