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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: J Affect Disord. 2014 Feb 10;158:154–160. doi: 10.1016/j.jad.2014.02.009

Table V.

IRT analysis by study and by sex

Items GuwM THT Males Females
λ (S.E.) λ (S.E.) λ (S.E.) λ (S.E.)
My appetite was poor 0.68 (0.03) 0.77 (0.01) 0.76 (0.01) 0.74 (0.01)
My sleep was restless 0.72 (0.02) 0.76 (0.01) 0.75 (0.01) 0.74 (0.01)
I felt sad 0.79 (0.02) 0.84 (0.01) 0.83 (0.01) 0.82 (0.01)
I felt like a bad person 0.79 (0.02) 0.83 (0.01) 0.82 (0.01) 0.82 (0.01)
I lost interest in my usual activities 0.81 (0.02) 0.87 (0.01) 0.84 (0.01) 0.86 (0.01)
I felt like I was moving too slowly 0.77 (0.02) 0.81 (0.01) 0.79 (0.01) 0.81 (0.01)
I wished I were dead 0.82 (0.03) 0.87 (0.01) 0.86 (0.01) 0.86 (0.01)
I was tired all the time 0.77 (0.02 0.89 (0.01) 0.77 (0.01) 0.79 (0.01)
I could not focus on the important things 0.82 (0.02) 0.82 (0.01) 0.80 (0.01) 0.83 (0.01)
I felt irritable 0.80 (0.01) 0.79 (0.01) 0.79 (0.01) 0.78 (0.01)