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Table 3 National estimates for IRs and 95% CIs of ACP, in episodes per 100,000 PY (2001–2018)

From: Incidence of non-invasive all-cause pneumonia in children in the United States before and after the introduction of pneumococcal conjugate vaccines: a retrospective claims database analysis

Year

All ages

Ages < 2 years

Ages 2–4 years

Ages 5–17 years

IR

95% CI

IR

95% CI

IR

95% CI

IR

95% CI

2001

2,329

(2,307–2,352)

5,761

(5,654–5,870)

3,841

(3,771–3,913)

1,452

(1,433–1,473)

2002

2,397

(2,381–2,412)

5,585

(5,513–5,658)

4,128

(4,076–4,180)

1,507

(1,492–1,521)

2003

2,478

(2,465–2,491)

5,737

(5,679–5,796)

4,364

(4,322–4,407)

1,542

(1,530–1,554)

2004

2,035

(2,024–2,045)

5,196

(5,145–5,246)

3,639

(3,604–3,674)

1,178

(1,169–1,187)

2005

2,352

(2,341–2,363)

5,586

(5,536–5,638)

4,143

(4,108–4,179)

1,441

(1,431–1,451)

2006

2,186

(2,176–2,196)

5,063

(5,020–5,107)

3,986

(3,954–4,019)

1,328

(1,319–1,337)

2007

2,426

(2,416–2,436)

5,261

(5,218–5,305)

4,312

(4,279–4,346)

1,555

(1,545–1,564)

2008

2,312

(2,303–2,322)

5,373

(5,330–5,416)

4,100

(4,069–4,131)

1,429

(1,420–1,438)

2009

2,864

(2,854–2,874)

5,935

(5,892–5,978)

4,646

(4,616–4,677)

1,980

(1,970–1,990)

2010

2,304

(2,295–2,313)

5,134

(5,095–5,172)

4,223

(4,194–4,252)

1,426

(1,418–1,434)

2011

2,418

(2,409–2,426)

5,128

(5,089–5,167)

4,283

(4,255–4,312)

1,570

(1,562–1,578)

2012

2,651

(2,643–2,660)

5,226

(5,189–5,263)

4,594

(4,566–4,621)

1,807

(1,798–1,815)

2013

2,218

(2,210–2,227)

4,905

(4,867–4,944)

3,967

(3,940–3,994)

1,401

(1,393–1,409)

2014

1,982

(1,975–1,989)

3,942

(3,911–3,973)

3,565

(3,541–3,590)

1,315

(1,308–1,322)

2015

2,103

(2,094–2,111)

3,933

(3,897–3,970)

3,713

(3,683–3,743)

1,449

(1,441–1,458)

2016

2,254

(2,245–2,263)

4,239

(4,201–4,278)

3,971

(3,941–4,002)

1,552

(1,543–1,561)

2017

1,955

(1,947–1,964)

3,939

(3,900–3,978)

3,402

(3,373–3,431)

1,316

(1,308–1,325)

2018

1,894

(1,885–1,903)

3,649

(3,612–3,686)

3,365

(3,336–3,395)

1,284

(1,276–1,293)

  1. Rates were obtained by direct standardization of incidence rates in the commercially insured and Medicaid population, by age, sex, and payer, using data from the U.S. Census Bureau, Current Population Survey and Annual Social and Economic Supplements. 95% CIs were calculated using the direct method as outlined by Fay and Feuer (1997) [34]
  2. Abbreviations: ACP All-cause pneumonia, CI Confidence interval, IR Incident rate, PY Person-years
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