Table 1.

Quality of life (QoL) quality assessment (max. 10 points).

Item	Scoring method
QoL primary outcome	No = 0
	Yes = 1
Group composition	Heterogeneous: active/controlled = 0
	Homogenous: active vs./or controlled = 1
Questionnaires	Generic only = 0
	Disease-specific = 0
	Domain-specific = 0
	Generic + disease-specific = 1
	Generic + domain-specific = 1
	Disease-specific + domain-specific = 1
	Generic + disease-specific + domain-specific = 2
Validation questionnaires	No = 0
	Yes, general validation = 1
	Yes, validated in cultural study population = 2
QoL domains assessed	One domain BPS = 0
	Two domains BPS = 1
	Three domains BPS = 2
Bio-psycho-social	Three domains BPS + other = 3
Discussion of clinical implication QoL scores	No = 0
	Yes = 1