Longitudinal comparison of direct medical cost, radiological and health-related quality of life treatment outcomes between traditional growing rods and magnetically controlled growing rods from preoperative to maturity

Cheung, Prudence Wing Hang; Wong, Carlos King Ho; Sadiang-abay, Jewel T.; Lau, Sin Ting; Cheung, Jason Pui Yin

doi:10.1186/s12891-022-05750-7

Table 6 Correlations between SRS scores and total medical cost

From: Longitudinal comparison of direct medical cost, radiological and health-related quality of life treatment outcomes between traditional growing rods and magnetically controlled growing rods from preoperative to maturity

		Whole cohort (N = 27)
		Accumulative total direct medical cost
SRS-22r		Index surgery	Index to 1-year	1-year to 2-year	2-year to 3-year	3-year to 4-year	4-year to 5-year	5-year to 6-year
Function	Pre-surgery	-0.159
	Post-surgery	-0.438	-0.218
	FU1	0.217	0.156	0.019
	FU2	-0.154	-0.017	-0.355	-0.273
	FU3		-0.383	0.031	0.385	0.387
	FU4			0.101	0.160	0.188	0.159	0.121
	Final fusion/ maturity				0.265	0.247	0.092	0.096
Pain	Pre-surgery	-0.590
	Post-surgery	-0.356	-0.092
	FU1	-0.076	0.193	-0.142
	FU2	-0.237	-0.159	-0.531	-0.300
	FU3		-0.015	0.135	0.150	-0.039
	FU4			0.089	0.111	0.002	-0.266	-0.188
	Final fusion/ maturity				0.035	-0.046	-0.305	-0.274
Appearance	Pre-surgery	0.640
	Post-surgery	0.108	0.117
	FU1	0.008	0.084	-0.172
	FU2	0.212	0.251	-0.075	-0.202
	FU3		-0.150	-0.168	-0.222	-0.009
	FU4			0.089	0.181	0.196	0.095	0.020
	Final fusion/ maturity				0.212	0.117	-0.112	-0.248
Mental health	Pre-surgery	-0.635
	Post-surgery	-0.251	0.006
	FU1	0.380	0.329	0.237
	FU2	-0.228	-0.122	-0.292	-0.109
	FU3		-0.279	-0.271	0.126	0.158
	FU4			-0.375	0.192	0.119	-0.072	-0.048
	Final fusion/ maturity				0.175	0.086	-0.081	-0.237
Satisfaction	Pre-surgery	-0.355
	Post-surgery	-0.285	-0.162
	FU1	-0.249	-0.373	-0.189
	FU2	-0.568*	-0.571*	-0.274	0.167
	FU3		-0.517	-0.194	-0.123	0.036
	FU4			-0.280	-0.079	0.017	0.198	0.272
	Final fusion/ maturity				0.420	0.404	0.345	0.378
Total	Pre-surgery	-0.145
	Post-surgery	-0.229	-0.025
	FU1	-0.137	0.102	-0.252
	FU2	-0.143	-0.027	-0.432	-0.275
	FU3		-0.313	-0.212	0.089	0.160
	FU4			-0.104	0.222	0.198	0.045	0.038
	Final fusion/ maturity				0.212	0.125	-0.132	-0.196
		MCGR (N = 16)
		Accumulative total direct medical cost
SRS-22r		Index surgery	Index to 1-year	1-year to 2-year	2-year to 3-year	3-year to 4-year	4-year to 5-year	5-year to 6-year
Function	Pre-surgery	-0.230
	Post-surgery	0.097	0.172
	FU1	0.403	0.465	-0.185
	FU2	0.199	0.154	-0.469	-0.600
	FU3		-0.087	0.331	0.110	0.035
	FU4			0.170	-0.274	-0.311	-0.349	-0.401
	Final fusion/ maturity				-0.135	-0.265	-0.541	-0.512
Pain	Pre-surgery	-0.047
	Post-surgery	0.300	0.366
	FU1	0.412	0.497	-0.142
	FU2	-0.086	-0.029	-0.575	-0.575
	FU3		0.013	0.130	-0.186	-0.306
	FU4			0.243	-0.128	-0.236	-0.527	-0.367
	Final fusion/ maturity				-0.296	-0.452	-0.799*	-0.725
Appearance	Pre-surgery	-0.875
	Post-surgery	0.102	0.210
	FU1	0.310	0.151	-0.337
	FU2	0.312	0.169	-0.632*	-0.792*
	FU3		0.209	0.026	-0.173	-0.263
	FU4			0.184	-0.280	-0.374	-0.586	-0.747*
	Final fusion/ maturity				0.026	-0.084	-0.351	-0.580
Mental health	Pre-surgery	0.949
	Post-surgery	0.298	0.352
	FU1	0.140	0.273	0.526
	FU2	-0.215	-0.192	-0.402	-0.468
	FU3		-0.003	-0.007	0.012	-0.051
	FU4			-0.268	-0.398	-0.448	-0.558	-0.439
	Final fusion/ maturity				0.083	0.030	-0.109	-0.330
Satisfaction	Pre-surgery	0.492
	Post-surgery	-0.436	-0.223
	FU1	-0.330	-0.404	-0.036
	FU2	-0.360	-0.417	-0.119	-0.038
	FU3		-0.697	-0.187	-0.063	-0.125
	FU4			-0.551	-0.208	-0.164	0.036	0.184
	Final fusion/ maturity				-0.007	-0.033	-0.008	0.101
Total	Pre-surgery	-0.468
	Post-surgery	0.311	0.357
	FU1	0.574	0.553	-0.147
	FU2	0.094	0.054	-0.609	-0.693*
	FU3		0.104	0.037	-0.181	-0.293
	FU4			0.032	-0.391	-0.462	-0.616	-0.594
	Final fusion/ maturity				-0.165	-0.300	-0.608	-0.676
		TGR (N = 11)
		Accumulative total direct medical cost
SRS-22r		Index surgery	Index to 1-year	1-year to 2-year	2-year to 3-year	3-year to 4-year	4-year to 5-year	5-year to 6-year
Function	Pre-surgery	NA
	Post-surgery	-0.391	0.274
	FU1	0.306	-0.106	-0.051
	FU2	-0.607	0.888	0.963*	0.613
	FU3		-0.034	-0.032	0.662	0.539
	FU4			0.894	-0.199	0.549	0.921	0.925
	Final fusion/ maturity				-0.199	0.549	0.921	0.925
Pain	Pre-surgery	NA
	Post-surgery	-0.226	0.567
	FU1	-0.627	0.768	0.282
	FU2	-0.681	0.380	0.112	0.704
	FU3		0.786	0.466	0.763	0.169
	FU4			-0.894	0.199	-0.549	-0.921	-0.925
	Final fusion/ maturity				NA	NA	NA	NA
Appearance	Pre-surgery	1.000
	Post-surgery	0.134	-0.225
	FU1	-0.277	0.278	0.081
	FU2	-0.843	0.115	0.602	0.818
	FU3		-0.848	-0.369	-0.505	0.174
	FU4			0.060	0.749	0.998*	0.797	0.792
	Final fusion/ maturity				0.991	0.610	0.066	0.057
Mental health	Pre-surgery	NA
	Post-surgery	-0.203	0.551
	FU1	0.249	0.031	-0.102
	FU2	-0.558	0.660	0.213	0.594
	FU3		0.180	-0.488	-0.390	-0.866
	FU4			-0.894	0.199	-0.549	-0.921	-0.925
	Final fusion/ maturity				-0.424	-0.939	-0.971	-0.969
Satisfaction	Pre-surgery	NA
	Post-surgery	-0.160	0.555
	FU1	0.417	-0.208	-0.252
	FU2	0.014	0.796	0.278	0.025
	FU3		0.034	0.032	-0.662	-0.539
	FU4			0.835	-0.948	-0.449	0.124	0.132
	Final fusion/ maturity				0.199	-0.549	-0.921	-0.925
Total	Pre-surgery	NA
	Post-surgery	-0.079	0.249
	FU1	-0.439	0.451	-0.161
	FU2	-0.983*	0.599	0.654	0.989*
	FU3		-0.975*	-0.878	-0.596	-0.157
	FU4			-0.835	0.948	0.449	-0.124	-0.132
	Final fusion/ maturity				0.564	-0.181	-0.698	-0.704

NA: data not available at that time point
^* Significant correlation with p < 0.05

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ISSN: 1471-2474

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