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. Author manuscript; available in PMC: 2009 Feb 1.
Published in final edited form as: J Psychiatr Res. 2007 Jan 23;42(3):205–212. doi: 10.1016/j.jpsychires.2006.12.003

TABLE 1.

Questionnaire Scores

Measure Tense
(mean ± SD)		 Calm
(mean ± SD)		 t df p
PSWQ 57.9 ± 12.4 32.9 ± 9.9 6.46 32 <.001
PSS10 22.0 ± 7.5 8.1 ± 6.8 5.52 31 <.001
BDIsv 44.3 ± 14.2 21.4 ± 13.1 5.02 34 <.001
PSQI 6.7 ± 3.4 3.9 ± 2.0 2.97 27.5 <.01
LSAS-F 21.1 ± 12.3 10.0 ± 8.3 2.98 31 <.01
ASI 21.4 ± 10.2 12.9 ± 12.7 2.22 34 <.04

Abbreviations: SD=standard deviation. t=unpaired t-test. df=degrees of freedom (these vary because of missing data. They are corrected to lower fractional values by the Levene test if variances are significantly unequal.) p=two-tailed probability. PSWQ=Penn State Worry Questionnaire. PSS10=Perceived Stress Scale, 10 item version. BDIsv=Beck Depression Inventory Short Version. PSQI=Pittsburgh Sleep Quality Index (higher scores indicate worse sleep.). LSAS-F= Liebowitz Social Anxiety Scale-Fear. ASI=Anxiety Sensitivity Inventory. The time frames for the PSS10, BDI, and LSAS-F are the past week, and for the PSQI, the past 4 weeks. The PSWQ and ASI ask how typical the statements are for the person.