Table 3 Linear mixed effects on the course of leg length discrepancy (n = 99). Coefficients (b), standard errors (SE), z− values, p− values, and 95% confidence intervals given.
From: Leg length measures appear inaccurate in the early phase following total hip arthroplasty
Measure (compared to Tear Drop Figure, in mm) | b | (SE) | z | P value | 95% Conf. Interval |
|---|---|---|---|---|---|
Trochanter | − 3.15 | 0.43 | − 7.28 | < 0.001 | [− 4.00;–2.30] |
Lower Sacroiliac Joint | − 0.42 | 0.43 | − 0.98 | 0.329 | [− 1.27; 0.43] |
Upper Sacroiliac Joint | − 0.23 | 0.43 | − 0.53 | 0.595 | [− 1.08; 0.62] |
Iliac Crest | 1.47 | 0.43 | 3.40 | 0.001 | [0.62; 2.32] |
Time (week) | 0.05 | 0.08 | 0.62 | 0.533 | [− 0.10; 0.19] |
Age | − 0.05 | 0.06 | − 0.81 | 0.419 | [− 0.18; 0.07] |
BMI | − 0.10 | 0.11 | − 0.08 | 0.937 | [− 0.23; 0.22] |
Gender (male) | − 0.55 | 1.07 | − 0.52 | 0.606 | [− 2.64; 1.54] |
Time × time | < − 0.01 | < 0.01 | − 7.61 | < 0.001 | [< − 0.01; < − 0.01] |
Age × time | < − 0.01 | < 0.01 | − 0.12 | 0.906 | [< − 0.01; < 0.01] |
BMI × time | < 0.01 | < 0.01 | 1.50 | 0.134 | [< − 0.01; 0.01] |
Gender × time | < 0.01 | 0.02 | 0.00 | 0.999 | [− 0.03; 0.03] |
Constant | 4.88 | 5.21 | 0.94 | 0.349 | [− 5.32; 15.1] |
