Skip to main content

Table 1 Cohort construction

From: Clinical and economic burden of pneumococcal disease in US adults aged 19–64 years with chronic or immunocompromising diseases: an observational database study

Criteria

Number of unique adults

 

2012

2013

2014

Total

Aged 19–64 years

33,431,239

27,591,388

29,913,349

50,807,486

Had continuous health plan enrollment (no gap of > 45 days) for at least one year (365 days) before January 1st and at least one day since January 1st

24,402,729

18,802,142

20,338,835

35,696,718