1. Validity of the Convergence Insufficiency Symptom Survey: A Confirmatory Study
- Author
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Ron D. Hays, Loraine T. Sinnott, Kathleen Reuter, Melissa L. Rice, Adam Perlman, Ryan Langan, Eva Olivares, Andrew Costello, Arlanna Moshfeghi, Mitchell Scheiman, Aaron B. Zimmerman, William V. Good, Kelly Watson, Tracy Kitts, Lyndon C. Wong, Richard W. Hertle, David B. Granet, Michael J. Earley, Argye Hillis, Deborah Amster, Tracee Shevlin, Karen Pollack, Melanie Schray, Marcela Frazier, Brandy Scombordi, Hilda Capo, Jan Sease, G. Lynn Mitchell, K. Hopkins, Molly Biddle, Michelle Buckland, Gina Marangoni Gabriel, Jacqueline Rodena, Raymond H. Chu, Maryann Redford, Andrew J. Toole, Cintia F. Gomi, Tanya Mahaphon, Erica Castro, Steven Ritter, Marie Diener-West, Eric Borsting, Audra Steiner, Becky A. Nielsen, Tomohike Yamada, Susanna M. Tamkins, Mary Bartuccio, Katherine K. Weise, Brian G. Mohney, Lily Zhu, Jeffrey Cooper, Mark Boas, Craig A. McKeown, Ana Rosa, Pam Wessel, Ruth Shoge, Javier Villalobos, Mark T. Dunbar, Ida Chung, Annette Bade, Jamie Morris, Vicky Fischer, Nidia Rosado, Yin C. Tea, Marsha Snow, Catherine Baldwin, Linda Barrett, Ashley Fazarry, Janene Sims, Marjean Taylor Kulp, Michael Gallaway, Kathryn Nelson, Lara Hustana, Gregory Fecho, Rachel Coulter, Elias Silverman, Jonathan M. Holmes, Michelle Lynn Anderson, Ronda Singh, Rebecca Bridgeford, Michael W. Rouse, Shira L. Robbins, Susan A. Cotter, Marta Brunelli, Carmen Barnhardt, Ruth E. Manny, Adrienne Broadfoot, Susan Parker, Leslie Simms, Stacy Friedman, Virginia Karlsson, and Nancy Stevens
- Subjects
Male ,Validation study ,medicine.medical_specialty ,Adolescent ,genetic structures ,Convergence insufficiency ,Severity of Illness Index ,Article ,Ocular Motility Disorders ,Reference Values ,Surveys and Questionnaires ,Severity of illness ,medicine ,Humans ,Single-Blind Method ,Child ,Psychiatry ,Cutoff score ,Observer Variation ,Vision, Binocular ,medicine.disease ,eye diseases ,Ophthalmology ,Multicenter study ,Reference values ,Female ,Psychology ,Observer variation ,Binocular vision ,Optometry ,Clinical psychology - Abstract
The objectives of the present study were to evaluate whether investigator bias influenced the Convergence Insufficiency Symptom Survey (CISS) scores of children with normal binocular vision (NBV) in our original validation study, reevaluate the usefulness of the cutoff score of 16, and reexamine the validity of the CISS.Six clinical sites participating in the Convergence Insufficiency Treatment Trial (CITT) enrolled 46 children 9 to18 years with NBV. Examiners masked to the child's binocular vision status administered the CISS. The mean CISS score was compared with that from the children with NBV in the original, unmasked CISS study and also to that of the 221 symptomatic convergence insufficiency (CI) children enrolled in the CITT.The mean (+/-standard deviation) CISS score for 46 subjects with NBV was 10.4 (+/-8.1). This was comparable with our prior unmasked NBV study (mean = 8.1 (+/-6.2); p = 0.11) but was significantly different from that of the CITT CI group (mean = 29.8 +/- 9.0; p0.001). Eighty-three percent of these NBV subjects scored16 on the CISS, which is not statistically different from the 87.5% found in the original unmasked study (p = 0.49).Examiner bias did not affect the CISS scores for subjects with NBV in our prior study. The CISS continues to be a valid instrument for quantifying symptoms in 9 to18-year-old children. These results also confirm the validity of a cut-point ofor = 16 in distinguishing children with symptomatic CI from those with NBV.
- Published
- 2009