Calculate Patient Health Questionnaire 15-Item Somatic Symptom Severity Scale (PHQ15) sum score

Calculate sum score of PHQ15

Patients are asked "During the past 4 weeks, how much have you been bothered by any of the following problems?"

calculate_phq15_sum(
  phq15_1,
  phq15_2,
  phq15_3,
  phq15_4,
  phq15_5,
  phq15_6,
  phq15_7,
  phq15_8,
  phq15_9,
  phq15_10,
  phq15_11,
  phq15_12,
  phq15_13,
  phq15_14,
  phq15_15
)

Arguments

phq15_1

vector for item "Stomach pain"

phq15_2

vector for item "Back pain"

phq15_3

vector for item "Pain in your arms, legs, or joints (kneeps, hips, etc.)"

phq15_4

vector for item "Menstrual cramps or other problems with your periods [Women only]"

phq15_5

vector for item "Headaches"

phq15_6

vector for item "Chest pain"

phq15_7

vector for item "Dizziness"

phq15_8

vector for item "Fainting spells"

phq15_9

vector for item "Feeling your heart pound or race"

phq15_10

vector for item "Shortness of breath"

phq15_11

vector for item "Pain or problems during sexual intercourse"

phq15_12

vector for item "Constipation, loos bowels, or diarrhea"

phq15_13

vector for item "Nausea, gas, or indigestion"

phq15_14

vector for item "Feeling tired or having low energy"

phq15_15

vector for item "Trouble sleeping"

Answers were coded /w levels 0 = "Not bothered at all", 1 = "Bothered a little" and 2 = "Bothered a lot"

Value

A numeric vector with sum score of phq15