Skip to main content
. Author manuscript; available in PMC: 2018 May 14.
Published in final edited form as: Psychosomatics. 2016 Feb 4;57(4):390–400. doi: 10.1016/j.psym.2016.02.002

Table 1. Regression Analysis Results of Influence of Key Variables on Change in Anxiety and on Functional Impairmenta.

Anxiety During Online Symptom-Checking (CGI)
 Model Predictor Variables β sr2
 Continuous R2 = .14* WI scores* .34 .09
Age* -.09 .01
Gender -.05 .00
Ethnicity .06 .00
Years of Education .04 .00
Medically Stable* -.08 .01
# hrs/day/month .03 .00
 Dichotomous R2 = .08* WH vs. WL* .19 .03
Age* -.10 .01
Gender -.04 .00
Ethnicity .07 .00
Years of Education .04 .00
Medically Stable -.06 .00
# hrs/day/month* .11 .01
Anxiety After Online Symptom-Checking (CGI)
 Model Predictor Variables β sr2
 Continuous R2 = .21* WI scores* .41 .14
Age* -.08 .01
Gender .02 .00
Ethnicity .03 .00
Years of Education .05 .00
Medically Stable* -.10 .01
# hrs/day/month* .10 .01
 Dichotomous R2 = .13* WH vs. WL* .26 .06
Age* -.85 .01
Gender .02 .00
Ethnicity .03 .00
Years of Education .05 .00
Medically Stable -.07 .00
# hrs/day/month* .18 .03
Functional Impairment (SDS)
 Model Predictor Variables β sr2
 Continuous R2 = 27* WI scores* .41 .15
Age .04 .00
Gender -.06 .00
Ethnicity .03 .00
Years of Education -.05 .00
Medically Stable* -.12 .01
# hrs/day/month* .18 .03
 Dichotomous R2 = .15* WH vs. WL* .17 .03
Age .04 .00
Gender -.09 .00
Ethnicity .06 .00
Years of Education -.06 .00
Medically Stable* -.10 .01
# hrs/day/month* .27 .07

Note:

*

p<.05

a

WI= Whiteley Index; WH= above 30 points on the WI; WL= 30 or below points on the WI; “# hrs/day/month”= Total number of hours spent checking physical symptoms online on the “worst day in the past month”; SDS = Sheehan Disability Scale; CGI = Clinicians Global Impressions-Improvement scale; Regressions including WI df = 618, Regressions including SDS df = 356).