Background characteristics and quality of life scores (n = 5142).

Note
a = information is missing for 1 participant
b = information is missing for 14 participants
c = High blood pressure and depression are the most common conditions
d = for 17 participants information was unavailable
e = for 68 participants no information was available
f = information is missing for 393 participants. For global health/quality of life and the functional scales a higher score indicates a better quality of life. For the continuous variables (i.e. global health/quality of life; emotional functioning; and cognitive functioning) mean scores (SD) are presented. For the dichotomized scales (i.e. physical functioning; role functioning; and social functioning) frequencies and percentages for the category with the highest quality of life is provided. Please note that for the QoL-scales 6, 3, 10, 1, 0, 6 participants respectively information was missing.
g = cognitive functioning was transformed by using square root transformation [√(101-raw score)], ranging from 1–10 with low scores having a better cognitive functioning. The transformed mean score and standard deviation for cognitive functioning is 2.9 (2.4).
Background characteristics and quality of life scores (n = 5142).