Table 1 Characteristics of study participants with achondroplasia (n = 40)
Variables | Spinal stenosis (n = 25) | No stenosis (n = 15) | Mean difference (95% CI) | P value |
|---|---|---|---|---|
Mean (SD) | Mean (SD) | |||
Age, years | 44.5 (16.2) | 24.4 (7.8) | 20.1 (12.4 to 27.9) | < 0.01 |
Body mass index, kg/m2 | 35.5 (6.2) | 29.6 (5.2) | 5.9 (2.1 to 9.8) | < 0.01 |
Height, cm | 135.2 (9.6) | 132.5 (7.4) | 2.8 ( − 3.1 to 8.6) | 0.35 |
Sitting height, cm | 86.9 (4.5) | 86.4 (2.7) | 0.5 ( − 1.9 to 2.8) | 0.68 |
6MWT, m a | 392 (123) | 523 (61) | − 131 ( − 192 to − 70) | < 0.01 |
30sSTS, stands b | 20.8 (5.6) | 26.6 (4.2) | − 5.7 ( − 9.2 to − 2.2) | < 0.01 |
Activity level, MET c | 2284 (2275) | 3678 (2825) | − 1395 ( − 3111 to 321) | 0.11 |
% (n) | % (n) | |||
Male gender | 48 (12) | 53 (8) | − 5 ( − 43 to 32) | 1.0 |
Lower limb extension, yes | 28 (7) | 20 (3) | 8 ( − 24 to 40) | 0.85 |
Wheelchair users | 56 (14) | 27 (4) | 29 ( − 5 to 64) | 0.14 |