The Inventory of Depressive Symptomatology is a 30-item scale that assesses criteria including mood, concentration, self criticism, suicidal ideation, interest, energy/fatigue, sleep, decrease/increase in appetite or weight, psychomotor agitation or retardation, diurnal mood variation, capacity for pleasure, sexual interest, bodily aches and pains, panic or phobic symptoms, digestive problems, interpersonal rejection sensitivity, and leaden paralysis. Items are scored on a 4 point scale with 0 reflecting no symptoms and 3 reflecting symptoms of maximum severity. The total score is calculated by summing the scores from 28 of the 30 items. Only one of items 11 or 12, and only one of items 13 or 14 are scored. The minimum score is 0 and the maximum score is 84. A score of 84 indicates maximum severity of depressive symptoms. Change from baseline is calculated as the baseline score minus the post-baseline score. A positive change indicates improvement.