Calculate Fatigue Severity Scale (FSS) mean score

Source: R/primary-coding.R

Calculate mean score of FSS

calculate_fss_mean(
  fss_1,
  fss_2,
  fss_3,
  fss_4,
  fss_5,
  fss_6,
  fss_7,
  fss_8,
  fss_9
)

Arguments

fss_1

vector for item "My motivation is lower when I am fatigued."

fss_2

vector for item "Exercise brings on my fatigue."

fss_3

vector for item "I am easily fatigued."

fss_4

vector for item "Fatigue interferes with my physical functioning."

fss_5

vector for item "Fatigue causes frequent problems for me."

fss_6

vector for item "My fatigue prevents sustained physical functioning."

fss_7

vector for item "Fatigue interferes with carrying out certain duties and responsibilities."

fss_8

vector for item "Fatigue is among my three most disabling symptoms."

fss_9

vector for item "Fatigue interferes with my work, family or social life."

Value

A numeric vector with sum score of FSS