Table 3 Multiple linear regression for physical, emotional and social summary scores^a

Variable	β ±s.e. ^b	P -value
Physical summary score
Age of the child	−1.37±0.26	<0.0001
Acute lymphoblastic leukemia	5.93±2.50	0.02
Intensive chemotherapy treatment	−6.12±0.90	<0.0001
Parent with chronic condition	−5.45±2.40	0.02
Sibling with chronic condition	−8.52±2.56	0.001
Emotional summary score
Age of the child	−0.68±0.19	0.0005
Male child	3.80±1.88	0.04
Prognosis of very good or excellent	7.84±2.38	0.001
Intensive chemotherapy treatment	−5.47±0.72	<0.0001
Male parent	6.17±2.82	0.03
Married	4.96±2.50	0.05
Parent with chronic condition	−5.29±1.94	0.007
Social summary score
Age of the child	−0.94±0.22	<0.0001
Time since diagnosis	−3.52±0.94	0.0004
Male child	5.14±2.07	0.01
Intensive chemotherapy treatment	−3.93±0.81	<0.0001
Parent working	5.72±2.11	0.01
Sibling with chronic condition	−5.90±2.22	0.02
Household adjusted income	0.00±0.00	0.004

s.e.=standard error.
^aMean summary scores are presented in the Results.
^bβ-coefficient from univariate linear regression, Positive β-coefficients meant that the predictor (or increasing values of the predictor) was associated with better quality of life, whereas negative β-coefficients suggested that the predictor (or increasing values of the predictor) was associated with worse quality of life.

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