Six minute walking distance (6MWD) among SARS survivors (n = 110) at 3 and 6 months after the onset of illness compared with Hong Kong normative data
| Outcome | Normal | 3 months | 6 months | p value† | |
|---|---|---|---|---|---|
| *Including one woman aged 61 years with 6MWD 492 m and 465 m at 3 and 6 months, respectively. | |||||
| **p<0.01. | |||||
| †6 months v 3 months. | |||||
| All survivors (n = 110*) | Mean (SD) | 464 (83) | 502 (95) | ** | |
| Age group (years) | |||||
| 21–30 (n = 37) | 0.01 | ||||
| Men | Mean (SD) | 651(105), (n = 80) | 487 (58), (n = 17) | 549 (73), (n = 17) | |
| Mean difference (95% CI) | −164 (−201 to −127)** | −102 (−155 to −49)** | |||
| Women | Mean (SD) | 600 (84), (n = 85) | 461 (75), (n = 20) | 493 (92), (n = 20) | 0.13 |
| Mean difference (95% CI) | −139 (−180 to −98)** | −107 (−149 to −65)** | |||
| 31–40 (n = 40) | |||||
| Men | Mean (SD) | 645 (93), (n = 78) | 513 (80), (n = 19) | 551 (98), (n = 19) | 0.06 |
| Mean difference (95% CI) | −132 (−178 to −86)** | −94 (−141 to 46)** | |||
| Women | Mean (SD) | 606 (86), (n = 108) | 476 (71), (n = 22) | 502 (53), (n = 22) | 0.11 |
| Mean difference (95% CI) | −130 (−169 to 91)** | −101 (−139 to −63)** | |||
| 41–50 (n = 21) | |||||
| Men | Mean (SD) | 623 (80), (n = 38) | 477 (82), (n = 7) | 543 (112), (n = 7) | 0.09 |
| Mean difference (95% CI) | −146 (−212 to −79)** | −80 (−151 to −9), p = 0.03 | |||
| Women | Mean (SD) | 541 (67), (n = 79) | 404 (83), (n = 14) | 473 (76), (n = 14) | ** |
| Mean difference (95% CI) | −137 (−177 to −97)** | −68 (−107 to −29)** | |||
| 51–60 (n = 11) | |||||
| Men | Mean (SD) | 588 (68), (n = 23) | 331 (83), (n = 2) | 405 (89), (n = 2) | 0.18 |
| Mean difference (95% CI) | −257 (−361 to −152)** | −183 (−288 to −78)** | |||
| Women | Mean (SD) | 534 (89), (n = 33) | 399 (92), (n = 9) | 371 (99), (n = 9) | 0.67 |
| Mean difference (95% CI) | −135 (−203 to −67)** | −163 (−232 to −94)** | |||