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Table 4 Most Frequently Expressed Areas of Concern Among Millennium Cohort Study Participants Responding to the Open-Ended Text Question

From: Application of latent semantic analysis for open-ended responses in a large, epidemiologic study

Area of Concerna

Total

n= 10,214

P1 Baseline Responses

n= 5,626

P1 Follow-up Responses

n= 3,297

P2 Baseline Responses

n= 1,291

Related Termsb

 

n

%

n

%

n

%

n

%

 

Illness/injury

2,859

28.0

1,433

25.5

1,033

31.3

393

30.4

suffered, recovered, developed

Exposure

1,385

13.6

887

15.8

328

10.0

170

13.2

chemicals, radiation, asbestos

Exercise

1,125

11.0

613

10.9

391

11.9

121

9.4

walking, biking, vigorous

Back pain

903

8.8

482

8.6

313

9.5

108

8.4

discs, herniation, lumbar

Deployment regions/concerns

780

7.6

399

7.1

275

8.3

106

8.2

Bosnia, barracks, DU

Arm

754

7.4

465

8.3

225

6.8

64

5.0

elbow, pronate, grip

Mental health

735

7.2

385

6.8

240

7.3

110

8.5

emotional, interpersonal, anxiety

Weight concerns

647

6.3

354

6.3

206

6.3

87

6.7

lose, dieting, obesity

Vaccination

459

4.5

299

5.3

114

3.5

46

3.6

VAERS, influenza, boosters

Anxiety/disorientation

355

3.5

185

3.3

117

3.6

53

4.1

shortness, sweating, tiredness

Surgery

212

2.1

124

2.2

55

1.7

33

2.6

removed, tape, wrapped

  1. aParticipants were able to provide a response in more than one area at multiple time points
  2. bExample terms included in the same cluster that is described by the Area of Concern