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Table 6 Item statistics for PHQ-15 (Somatization Disorder Scale)

From: An arabic translation, reliability, and validation of Patient Health Questionnaire in a Saudi sample

PHQ-15 items Mean Std. deviation Corrected item-total correlation Cronbach’s alpha if item deleted Change in Cronbach’s alpha if item deleted
Stomach pain 0.73 0.692 0.515 0.811 −0.015
Back pain 0.75 0.731 0.454 0.815 −0.011
Pain in your arms, legs, or joints (knees, hips, etc.) 0.69 0.717 0.498 0.812 −0.014
Menstrual cramps or other problems with your 0.57 0.761 0.460 0.815 −0.011
Pain or problems during sexual intercourse 0.00 0.053 0.032 0.830 0.004
Headaches 0.91 0.707 0.417 0.818 −0.008
Chest pain 0.28 0.513 0.353 0.821 −0.005
Dizziness 0.49 0.630 0.502 0.812 −0.014
Fainting spells 0.05 0.257 0.207 0.827 0.001
Feeling your heart pound or race 0.60 0.684 0.525 0.811 −0.015
Shortness of breath 0.40 0.600 0.499 0.813 −0.013
Constipation, loose bowels, or diarrhea 0.73 0.737 0.514 0.811 −0.015
Nausea, gas, or indigestion 0.80 0.767 0.580 0.806 −0.020
Trouble falling or staying asleep, or sleeping too 1.11 0.819 0.398 0.821 −0.005
Feeling tired or having little energy 1.17 0.734 0.509 0.811 −0.015
Total 9.28 5.331 0.224 0.826 0.000