Pre- and postoperative quality of life in patients treated for scoliosis

Figures & data

Figure 1. Flow chart for the inclusion of patients in the study.

Table 1. Data at the time of surgery (mean (SD) or number (n)) for the 211 patients in the study. In cases of missing data, the number of patients who were available is given in the table. The p-values were obtained from the chi-square test or the Welch F-test

	Idiopathic (n = 168)	Congenital (n = 11)	Neuromuscular (n = 32)	p-value
Females	138	6	16	< 0.001
Age at time of surgery, years	15.7 (2.1)	14.6 (2.7)	14.7 (2.8)	0.08
Largest Cobb angle before surgery, degrees	55 (10)	49 (14)	67 (20)	0.005
Clinically important kyphosis, degrees ^a	44 (17)	35 (10)	63 (25)	0.07
number of cases	8	3	10
Duration of surgery, min	255 (87)	235 (96)	340 (126)	0.02
number of cases	139	7	27
Intraoperative blood loss, L	1.2 (1.2)	1.0 (0.7)	2.6 (2.2)	0.01
Number of operated vertebrae	11 (3)	7 (4)	15 (2)	< 0.001
Hospital stay, days	9 (3)	9 (2)	12 (4)	< 0.001

^a Kyphosis was reported by the surgeon only in cases of clinical significance.

Table 2. Preoperative, 1-year, and 2-year postoperative EQ-5D-index in the 3 groups of scoliosis patients. Data are mean (SE). The p-values given are from the Welch F-test for comparison between groups at the different time points

EQ-5D index	Idiopathic	Congenital	Neuromuscular	p-value
Preoperatively	0.76 (0.02)	0.74 (0.07)	0.10 (0.06)	< 0.001
number of cases ^a	168	11	32
1 year postoperatively	0.82 (0.02)	0.78 (0.07)	0.31 (0.08)	< 0.001
number of cases ^a	128	9	21
2 years postoperatively	0.82 (0.02)	0.87 (0.05)	0.25 (0.09)	< 0.001
number of cases ^a	111	7	16

^a number of patients who answered the questionnaire.

Figure 2. Distribution of the EQ-5D index. The data shown are for the 211 patients who answered the EQ-5D preoperatively.

Figure 3. Distribution of the SRS22r index. The data shown are for the 114 patients who answered the SRS22r preoperatively.

Table 3. Preoperative, 1-year, and 2-year postoperative SRS-22r-index, excluding the satisfaction domain, in the 3 groups of scoliosis patients. The SRS-22r was introduced later than the EQ-5D in the registry, and was therefore not available for all patients. Data are mean (SE). The p-values given are from the Welch F-test for comparison between groups at the different time points

SRS-22r index	Idiopathic	Congenital	Neuromuscular	p-value
Preoperatively	3.8 (0.1)	4.0 (0.3)	3.3 (0.2)	0.2
number of cases ^a	93	6	15
1 year postoperatively	4.2 (0.1)	4.3 (0.2)	4.0 (0.2)	0.4
number of cases ^a	108	9	18
2 years postoperatively	4.1 (0.1)	4.5 (0.2)	4.0 (0.2)	0.2
number of cases ^a	123	7	13

^a n = number of patients who answered the questionnaire.