| Whole cohort (N = 27) | MCGR (N = 16) | TGR (N = 11) | TGR vs MCGR |  | |||
---|---|---|---|---|---|---|---|---|
Time-points | Â | 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 | Â |
 | 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 | Â |
 | 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 | Â |
 | 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 | Â |
 | 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 | Â |
 | USD | 49,734 (13,533) | 47,582 (7,105) | 52,862 (19,552) |  |  |  |  |