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. 2018 Sep 14;18:715. doi: 10.1186/s12913-018-3529-4

Table 1.

Demographic characteristics of pneumonia patients in the MarketScan database between 2018 and 2014

Variable Mean Range of annual values
Pneumonia patients, n 626,580 486,442–758,196
Age (y)
 Mean 41.9 39.4–44.7
 Median 46 42–50
Age range, %
  <  1 y 2.0 1.6–2.4
 1 y 3.3 2.9–3.6
 2–4 y 8.7 7.7–9.3
 5–17 y 17.1 15.1–19.3
 18–49 y 22.8 21.4–24.2
 50–64 y 22.0 20.9–23.8
 65–74 y 8.3 7.0–10.1
 75–84 y 9.2 8.3–10.3
  ≥ 85 y 6.7 5.4–8.1
Male, n (%) 48.7 48.4–48.8
Insurance, n (%)
 Commercial a 75.5 71.1–79.0
 Medicare b 24.5 21.0–28.9
US geographic region, n (%)
 Northeast 17.5 9.7–22.6
 North Central 26.4 24.1–29.8
 South 36.8 31.2–45.4
 West 17.7 14.5–21.2
 Unknown 1.7 0.2–3.1

a Includes active employees and their dependents, early (non-Medicare) retirees and their dependents, and individuals covered under the Consolidated Omnibus Budget Reconciliation Act

b Includes retirees (> 65 y), their dependents, and younger people with disabilities