Table 4 The results of subgroup analyses

Physical Function

SF-36:-0.46 (− 0.68, − 0.25)

CHQ:-0.09 (− 0.37, 0.19)

ITQOL:-0.76 (−1.11, − 0.41)

1: − 0.35 (− 0.49, − 0.20)

2:-0.63 (− 1.26, 0.01)

Children:-0.32 (−0.78, 0.13)

Adult: − 0.46 (− 0.68, − 0.28)

Role Physical

SF-36:-0.43 (− 0.66, − 0.20)

CHQ: − 0.18 (− 0.46, 0.10)

1: −0.24 (− 0.38, − 0.10)

2: − 0.66 (− 1.04, − 0.28)

Children: − 0.18 (− 0.46, 0.10)

Adult: − 0.43 (− 0.66, − 0.20)

Bodily pain

SF-36: −0.38 (− 0.52, − 0.23)

CHQ: − 0.50 (− 0.91, − 0.09)

ITQOL: 0.13 (− 0.22, 0.48)

1: −0.28 (− 0.47, − 0.09)

2: − 0.57 (− 0.82, − 0.32)

Children:-0.28 (− 0.77, 0.21)

Adult:-0.30 (− 0.52, − 0.09)

Vitality

SF-36: −0.42 (− 0.63, − 0.21)

1: −0.41 (− 0.69, − 0.12)

2: − 0.45 (− 0.76, − 0.13)

Children:

Adult: − 0.42 (− 0.63, − 0.21)

Mental health

SF-36:-0.35 (−0.62, − 0.08)

CHQ:-0.11 (− 0.57, 0.35)

1: −0.33 (− 0.66, − 0.01)

2: − 0.42 (− 0.66, − 0.17)

Children: − 0.11 (− 0.57, 0.35)

Adult: − 0.45 (− 0.70, − 0.21)

Role emotional

SF-36: −0.47 (− 0.58, − 0.37)

CHQ: − 0.02 (− 0.42, 0.38)

1: −0.41 (− 0.55, − 0.26)

2: − 0.64 (− 0.96, − 0.32)

Children: − 0.02 (− 0.42, 0.38)

Adult: − 0.47 (− 0.58, − 0.37)

Social functioning

SF-36: −0.47 (− 0.59, − 0.35)

1: −0.44 (− 0.55, − 0.33)

2: − 0.71 (− 1.04, − 0.39)

Adult: −0.47 (− 0.59, − 0.35)

General health

SF-36: − 0.61 (− 0.77, − 0.45)

CHQ: − 0.55 (− 1.40, 0.30)

ITQOL: − 0.92 (− 1.28, − 0.57)

1: − 0.55 (− 0.75, − 0.35)

2: − 0.90 (− 1.16, − 0.65)

Children: − 0.68 (− 1.21, − 0.14)

Adult:-0.61 (− 0.77, − 0.45)

Family cohesion

CHQ: −0.18 (− 0.54, 0.17)

ITQOL: 0.25 (− 0.10, 0.60)

1: 0.14 (− 0.12, 0.41)

2: − 0.36 (− 0.76, 0.03)

Children: − 0.03 (− 0.39, 0.33)