Calculate Perceived Stress Scale (PSS) sum score

Calculate sum score of PSS

calculate_pss_total(
  pss1,
  pss2,
  pss3,
  pss4,
  pss5,
  pss6,
  pss7,
  pss8,
  pss9,
  pss10
)

Arguments

pss1

vector for item "In the last month, how often have you been upset because of something that happened unexpectedly?"

pss2

vector for item "In the last month, how often have you felt that you were unable to control the important things in your life?"

pss3

vector for item "In the last month, how often have you felt nervous and stressed?"

pss4

vector for item "In the last month, how often have you felt confident about your ability to handle your personal problems?"

pss5

vector for item "In the last month, how often have you felt that things were going your way?"

pss6

vector for item "In the last month, how often have you found that you could not cope with all the things that you had to do?"

pss7

vector for item "In the last month, how often have you been able to control irritations in your life?"

pss8

vector for item "In the last month, how often have you felt that you were on top of things?"

pss9

vector for item "In the last month, how often have you been angered because of things that happened that were outside of your control?"

pss10

vector for item "In the last month, how often have you felt difficulties were piling up so high that you could not overcome them?"

Items 4, 5, 7 and 8 need to be recoded first

Value

A numeric vector with sum score of PSS