Calculate Patient Health Questionnaire Depression Scale 8 (PHQ 8) sum score

Calculate sum score of PHQ-8

Patients are asked "Over the last 2 weeks, how often have you been bothered by any of the following problems?"

calculate_phq8_sum(
  phq8_1,
  phq8_2,
  phq8_3,
  phq8_4,
  phq8_5,
  phq8_6,
  phq8_7,
  phq8_8
)

Arguments

phq8_1

vector for item "Little interest or pleasure in doing things."

phq8_2

vector for item "Feeling down, depressed, or hopeless."

phq8_3

vector for item "Trouble falling or staying asleep, or sleeping too much."

phq8_4

vector for item "Feeling tired or having little energy."

phq8_5

vector for item "Poor appetite or overeating"

phq8_6

vector for item "Feeling bad about yourself - or that you are a failure or have let yourself or your family down."

phq8_7

vector for item "Trouble concentrating on things, such as reading the newspaper or watching television."

phq8_8

vector for item "Moving or speaking so slowly that other people could have notived. Or the opposite - being so fidgety or restless that you have been moving around a lot more than usual."

#' Answers were coded /w levels 0 = "Not at all", 1 = "Several days", 2 = "More than half the days" and 3 = "Nearly every day"

Value

A numeric vector with sum score of phq8