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Table 2 Head immersion swimmers and non-swimmers, by beach site and age group 1,2

From: The incidence and health burden of earaches attributable to recreational swimming in natural waters: a prospective cohort study

 

Head under water

 

No

Yes

Total

 

No.

%

No.

%

No.

%

Age category

      

1 and under

355

48.1

383

51.9

738

100.0

2–5

379

14.8

2185

85.2

2564

100.0

6–10

340

8.1

3864

91.9

4204

100.0

11–19

1448

21.8

5193

78.2

6641

100.0

20–50

8265

43.0

10970

57.0

19235

100.0

Over 50

3188

59.6

2158

40.4

5346

100.0

Total

13975

36.1

24753

63.9

38728

100.0

Beach

      

Boquerón, PR

2915

22.8

9878

77.2

12793

100.0

Edgewater, AL

370

46.8

421

53.2

791

100.0

Fairhope, MI

834

56.8

634

43.2

1468

100.0

Goddard, RI

1558

66.9

772

33.1

2330

100.0

Huntington, OH

1513

74.9

506

25.1

2019

100.0

Surfside, SC

1722

21.5

6274

78.5

7996

100.0

Silver, MI

3324

46.1

3881

53.9

7205

100.0

West, IN

708

37.2

1197

62.8

1905

100.0

Washington Park, IN

1237

42.5

1674

57.5

2911

100.0

Total

14181

36.0

25237

64.0

39418

100.0

  1. 1Excluding waders, those with earache at baseline, earache due to allergy and those with missing data on earache at follow up.
  2. 2Categories for age do not add to 39,418 due to missing values.