View source: R/gen-scoreFANLTC.R
scoreFANLTC | R Documentation |
Generates all of the scores of the Functional Assessment of Non-Life Threatening Conditions (FANLTC) from item responses.
scoreFANLTC(df, id = NULL, updateItems = FALSE, keepNvalid = FALSE)
df |
A data frame with the questionnaire items, appropriately-named. |
id |
(optional) The quoted name of a variable in |
updateItems |
(optional) Logical, if |
keepNvalid |
(optional) Logical, if |
Given a data frame that includes all of the FANLTC items as variables, appropriately named, this function generates all of the FANLTC scale scores. It is crucial that the item variables in the supplied data frame are named according to FACT conventions. For example, the first physical well-being item should be named GP1, the second GP2, and so on. Please refer to the materials provided by http://www.facit.org for the particular questionnaire you are using. In particular, refer to the left margin of the official questionnaire (i.e., from facit.org) for the appropriate item variable names.
Most users will want to omit the updateItems
and keepNvalid
arguments or, equivalently, set them both to FALSE
. For more details
on these arguments, see the documentation entry for scoreFACTG
and FACTscorer
.
A data frame with the following scale scores is returned:
PWB - Physical Well-Being subscale
SWB - Social/Family Well-Being subscale
EWB - Emotional Well-Being subscale
FWB - Physical Well-Being subscale
FANLTC - FANLTC Total Score (PWB+SWB+EWB+FWB)
If a variable was given to the id
argument, then that variable will
also be in the returned data frame. Additional, relatively unimportant,
variables will be returned if updateItems = TRUE
or keepNvalid =
TRUE
.
Keep in mind that this function (and R in general) is case-sensitive.
All variables should be in numeric or integer format.
This scoring function expects missing item responses to be coded as NA, 8, or 9, and valid item responses to be coded as 0, 1, 2, 3, or 4. Any other value for any of the items will result in an error message and no scores.
FANLTC Scoring Guidelines, available at http://www.facit.org
Cella, D., & Nowinski, C. J. (2002). Measuring quality of life in chronic illness: The functional assessment of chronic illness therapy measurement system. Archives of Physical Medicine and Rehabilitation, 83, Supplement 2, S10–S17.
See FACTscorer
for more comprehensive information
about using the functions in this package. This function is very similar
to the scoreFACTG
function. See the documentation for
scoreFACTG
for more details on the arguments and for
examples. For brevity, examples are omitted below, but can be accessed by
running example(scoreFANLTC)
.
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