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Table 1 Population trends in the Nagasaki Prefecture and incidence of aspiration pneumonia

From: Incidence and characteristics of aspiration pneumonia in the Nagasaki Prefecture from 2005 to 2019

Year

Total population

Population of individuals aged ≥ 65 years

Aging population percentage(%)

Aspiration pneumonia

Incidence per 100,000

Male/Female a

2005

1,478,632

348,820

23.6

183

12.4

106/72

2006

1,466,512

355,228

24.2

176

12.1

91/78

2007

1,453,740

361,143

24.8

206

14.2

107/95

2008

1,441,451

364,438

25.3

232

17.3

124/99

2009

1,432,236

369,387

25.8

416

29.0

227/186

2010

1,426,779

369,290

25.9

429

30.1

220/190

2011

1,417,282

368,942

26.0

474

33.5

252/210

2012

1,407,925

377,759

26.8

570

41.7

296/258

2013

1,396,481

386,813

27.7

675

49.2

362/302

2014

1,385,533

397,260

28.7

681

49.4

357/318

2015

1,377,187

404,686

29.4

755

56.0

425/325

2016

1,366,514

412,690

30.2

858

63.2

449/392

2017

1,353,550

419,253

31.0

875

65.2

484/376

2018

1,339,438

423,907

31.6

938

71.3

531/388

2019

1,325,205

427,988

32.3

853

65.1

456/375

  1. aExcluding 167 unknown cases