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 4 Mean and standard deviation of SRS domain and total scores for patients in MCGR and TGR groups

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)	MCGR (N = 16)	TGR (N = 11)	p value	Difference in changes (postop – preop) of TGR vs MCGR	p value	Difference in changes (FU—post-surgery)_TGR minus (FU—post-surgery)_MCGR	p value	Power^
Time-points	SRS-22r domain scores
	Function
Pre-surgery	4.53 (0.37)	4.50 (0.48)	4.60 (0.00)	0.793
Post-surgery	4.48 (0.35)	4.37 (0.31)	4.69 (0.34)	0.051	0.25	0.578
FU1	4.16 (1.18)	4.30 (0.37)	3.93 (1.95)	0.564			-0.73	0.287
FU2	4.31 (0.39)	4.26 (0.44)	4.45 (0.19)	0.432			-0.27	0.126
FU3	4.43 (0.42)	4.30 (0.44)	4.70 (0.20)	0.120			0.03	0.907
FU4	4.38 (0.37)	4.28 (0.38)	4.67 (0.12)	0.126			0.08	0.577
Final fusion/ maturity	4.38 (0.49)	4.23 (0.51)	4.73 (0.23)	0.147			0.20	0.502
	Pain
Pre-surgery	4.73 (0.35)	4.60 (0.37)	5.00 (0.00)	0.218
Post-surgery	4.45 (0.65)	4.23 (0.68)	4.83 (0.37)	0.049*	0.30	0.740
FU1	4.63 (0.36)	4.58 (0.42)	4.71 (0.24)	0.494			-0.53	0.024*	0.15
FU2	4.51 (0.73)	4.42 (0.85)	4.75 (0.19)	0.465			-0.53	0.242
FU3	4.67 (0.37)	4.63 (0.41)	4.75 (0.30)	0.601			-0.55	0.127
FU4	4.73 (0.34)	4.68 (0.37)	4.87 (0.23)	0.431			-0.48	0.233
Final fusion/ maturity	4.66 (0.75)	4.51 (0.87)	5.00 (0.00)	0.378			-0.20	0.765
	Appearance
Pre-surgery	3.77 (0.70)	4.05 (0.25)	3.20 (1.13)	0.181
Post-surgery	3.89 (0.71)	3.93 (0.65)	3.83 (0.86)	0.767	0.40	0.742
FU1	3.85 (0.48)	3.84 (0.42)	3.88 (0.61)	0.883			0.25	0.438
FU2	3.57 (0.67)	3.66 (0.54)	3.35 (0.98)	0.456			-0.07	0.890
FU3	3.82 (0.56)	3.78 (0.49)	3.90 (0.74)	0.732			0.60	0.061
FU4	4.00 (0.48)	3.90 (0.44)	4.27 (0.58)	0.283			1.08	0.017*	0.44
Final fusion/ maturity	3.92 (0.48)	3.89 (0.50)	4.00 (0.53)	0.753			0.76	0.184
	Mental health
Pre-surgery	4.27 (0.37)	4.10 (0.12)	4.60 (0.57)	0.127
Post-surgery	4.47 (0.45)	4.37 (0.41)	4.66 (0.49)	0.180	0.30	0.300
FU1	4.19 (1.22)	4.52 (0.39)	3.63 (1.89)	0.165			-1.12	0.085
FU2	4.26 (0.68)	4.20 (0.71)	4.40 (0.69)	0.639			-0.25	0.521
FU3	4.40 (0.43)	4.28 (0.44)	4.65 (0.34)	0.169			-0.08	0.711
FU4	4.31 (0.49)	4.15 (0.42)	4.73 (0.46)	0.078			0.18	0.389
Final fusion/ maturity	4.28 (0.54)	4.20 (0.58)	4.47 (0.50)	0.509			-0.10	0.758
	Satisfaction
Pre-surgery	1.33 (2.16)	0.75 (1.50)	2.50 (3.54)	0.409
Post-surgery	3.63 (1.71)	3.42 (1.69)	4.00 (1.80)	0.488	-0.75	0.688
FU1	3.28 (1.75)	3.00 (1.68)	3.75 (1.92)	0.426			0.32	0.732
FU2	3.43 (1.60)	2.95 (1.67)	4.63 (0.25)	0.076			0.45	0.271
FU3	2.96 (2.02)	2.56 (1.78)	3.75 (2.50)	0.361			-0.31	0.737
FU4	2.55 (2.13)	2.25 (1.93)	3.33 (2.89)	0.481			-0.29	0.819
Final fusion/ maturity	3.25 (1.84)	2.57 (1.81)	4.83 (0.29)	0.071			0.76	0.029*	0.97
	SRS-22r Total score
Pre-surgery	4.31 (0.25)	4.29 (0.18)	4.37 (0.45)	0.758
Post-surgery	4.33 (0.42)	4.23 (0.41)	4.50 (0.41)	0.179	0.33	0.503
FU1	4.34 (0.31)	4.28 (0.29)	4.44 (0.33)	0.320			-0.08	0.609
FU2	4.16 (0.50)	4.11 (0.56)	4.28 (0.34)	0.601			-0.20	0.457
FU3	4.31 (0.35)	4.19 (0.38)	4.54 (0.08)	0.113			0.09	0.593
FU4	4.34 (0.34)	4.22 (0.32)	4.66 (0.12)	0.053			0.28	0.180
Final fusion/ maturity	4.30 (0.46)	4.18 (0.51)	4.57 (0.12)	0.231			0.23	0.487

FU Follow-up
^* Statistical significance at p < 0.05
^ Post-hoc power analyses with α = 0.05, two-tailed, and effect size calculated for the variable at the specific time-point

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