RELIABILITY, VALIDITY AND APPLICATION OF AN IMPROVED SCALE FOR ASSESSMENT OF MOTION SICKNESS SEVERITY

Three sea going vessels steamed side-by-side through slight seas off the coast of Oahu, Hawaii. A four-hour octagon was transitted twice each day for three consecutive days while motion sickness symptomatology was recorded from eighteen enlisted men who alternated among the vessels. Dramatic differences in illness severity were obtained whether comparisions were made using objective evidence of vomiting episodes or subjective reporting of symptoms on questionnaires. Reliability of this scoring method was excellent (r-.95). In addition to face and construct validity, evidence is presented of the predictive validity of the scoring method in a separate octogonal steaming experiment; using a 95' Coast Guard Patrol Boat in an equivalent experimental paradigm. This study showed significant covariance encounter direction of the vessel to the primary swell (p. less than 01). Additional, significant correlations were found between sickness severity and test subject concentration, fatigue, urine production and urine specific gravity. The majority of these relationships would not have been disclosed had only the dichotomous criterion of vomit/nonvomit been employed in assessing motion sickness severity. Implications of these data as design criteria for marine vehicles are discussed.

  • Corporate Authors:

    United States Coast Guard

    Office of Research and Development, 400 7th Street, NW
    Washington, DC  USA  20590
  • Authors:
    • Wiker, S F
    • KENNEDY, R S
    • McCauley, M E
    • Pepper, R L
  • Publication Date: 1979-5

Media Info

  • Features: References;
  • Pagination: 19 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00196563
  • Record Type: Publication
  • Report/Paper Numbers: CG-D-29-79 Final Rpt.
  • Files: TRIS
  • Created Date: Sep 15 1979 12:00AM