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Table 4 Comparison of frequency distributions (profiles) of the EQ-5D-3L for patient and control groups

From: Long-term survival and quality of life after intensive care for patients 80 years of age or older

Variable Total patients (n = 58) Control group (n = 179) p value
Age, years, mean ± SD 87.4 ± 4.0 86.7 ± 4.4 0.265a
Male, % (n) 69.0 (40) 66.5 (119) 0.726b
Mobility, % (n)    0.504c
 No problem 41.4 (24) 43.6 (78)  
 Some problems 51.7 (30) 54.7 (98)  
 Confined to bed 6.9 (4) 1.7 (3)  
Self-care, % (n)    0.957c
 No problem 75.9 (44) 74.9 (134)  
 Some problems 15.5 (9) 21.8 (39)  
 Unable to 8.6 (5) 3.4 (6)  
Usual activities, % (n)    0.237c
 No problem 43.1 (25) 49.7 (89)  
 Some problems 41.4 (24) 41.3 (74)  
 Unable to 15.5 (9) 8.9 (16)  
Pain and discomfort, % (n)    0.229c
 None 43.1 (25) 34.6 (62)  
 Moderate 51.7 (30) 58.1 (104)  
 Extreme 5.2 (3) 7.3 (13)  
Anxiety and depression, % (n)    0.258c
 None 77.6 (45) 69.8 (125)  
 Moderate 20.7 (12) 27.9 (50)  
 Extreme 1.7 (1) 2.2 (4)  
EQ index, mean ± SD 0.71 ± 0.28 0.73 ± 0.23 0.924c
EQ VAS, mean ± SD 63.9 ± 20.3 (n = 53) 67.7 ± 22.0 (n = 170) 0.219c
  1. SD standard deviation, EQ EuroQol, VAS visual analog scale (range 0–100)
  2. aIndependent t test
  3. bPearson’s chi-square
  4. cMann-Whitney U test