. 2016 Jun 8;14:89. doi: 10.1186/s12955-016-0491-x

Table 1.

Study sample characteristics and Portuguese general population aged 18 or more

	Sample of individuals aged ≤30 (n = 624)	Sample of individuals aged >30 (n = 303)	Overall sample (n = 927)	PT general population aged 18–30 (N = 1.524.869)^a
Mean age (SD)	21.7 (3.2)	38.1 (6.3)	25.5 (8.1)	24.1 (3.7)
% women	60.4	61.1	60.6	49.6
% single	93.8	49.5	79.4	63.0
% without a chronic disease^b	82.2	78.9	81.1	69.2
Mean EQ-5D-5L (SD)	0.896 (0.119)	0.889 (0.133)	0.894 (0.124)	n.a.
Mean EQ-5D-3L (SD)^c	0.919 (0.114)	0.907 (0.123)	0.915 (0.117)	0.758 (SE-0.006)
Mean EQ-5D VAS (SD)^c	84.7 (12.1)	82.3 (13.6)	83.9 (12.7)	74.9 (SE-0.504)

SD Standard deviation, SE Standard Error, PT Portuguese, n.a. Not available

^aSource: Census 2011 [25]. ^bSource: 2005/2006 Portuguese National Health Survey [26]. ^cSource: EQ-5D-3L Portuguese population norms [22]