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Table 3 Mean and standard deviation of direct medical costs in each patient of MCGR and TGR

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)

TGR vs MCGR

 

Time-points

 

Accumulative total direct medical cost

Power^

  

Mean (SD)

Mean (SD)

Mean (SD)

Cost ratio

95% C.I

p value

Index surgery

HKD

187,287 (64,963)

223,108 (21,204)

135,184 (72,519)

0.606

(0.464, 0.791)

 < 0.001*

0.99

 

USD

23,864 (8,277)

28,427 (2,702)

17,225 (9,240)

    

Index to 1-year

HKD

249,174 (68,515)

273,197 (45,199)

214,231 (82,911)

0.784

(0.634, 0.970)

0.025*

0.63

 

USD

31,749 (8,730)

34,810 (5,759)

27,296 (10,564)

    

1-year to 2-year

HKD

299,923 (65,536)

318,551 (56,000)

272,827 (71,415)

0.856

(0.726, 1.010)

0.065

 
 

USD

38,214 (8,350)

40,588 (7,135)

34,762 (9,099)

    

2-year to 3-year

HKD

343,091 (73,647)

341,722 (59,220)

345,084 (93,991)

1.010

(0.854, 1.194)

0.909

 
 

USD

43,714 (9,383)

43,539 (7,545)

43,970 (11,976)

    

3-year to 4-year

HKD

356,534 (80,628)

347,378 (58,363)

369,852 (107,068)

1.065

(0.896, 1.265)

0.476

 
 

USD

45,428 (10,273)

44,262 (7,436)

47,123 (13,642)

    

4-year to 5-year

HKD

378,469 (109,515)

357,153 (66,959)

409,474 (150,578)

1.146

(0.929, 1.415)

0.203

 
 

USD

48,222 (13,954)

45,506 (8,531)

52,173 (19,186)

    

5-year to 6-year

HKD

390,332 (106,215)

373,448 (55,765)

414,892 (153,454)

1.111

(0.909, 1.358)

0.304

 
 

USD

49,734 (13,533)

47,582 (7,105)

52,862 (19,552)

    
  1. Cost ratio = TGR: MCGR costs
  2. * Statistical significance at p < 0.05
  3. ^ Post-hoc power analyses with α = 0.05, two-tailed, and effect size calculated for the variable at the specific time-point