| Model |
Mean standardized
difference (95% CI) |
% changed statistical significance (95% CI) |
| No adjustment |
172.3 (138-207) |
51.9 (0.38-0.66) |
| I) Single linear term |
71.69 (51.7-91.7) |
15.4 (6.9-28.1) |
| II) Categories (5) |
21.1 (14.3-28.9) |
5.8 (1.2-12.1) |
| IIb) Categories (4) |
23.4 (15.6-31.2) |
11.5 (4.4-23.4) |
| IIc) Categories (3) |
49.6 (28.1-71.1) |
15.4 (6.9-28.1) |
| IId) Binary variables |
48.5 (28.8-68.2) |
13.5 (5.6-25.8) |
| FP |
12.7 (10.0-15.4) |
3.9 (0.5-13.2) |
| GAM |
0 |
0 |
FP: Fractional Polynomials, GAM: smoothing splines in a Generalized Additive
Model |
