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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