Table 1
Comparison of fitting alternative polynomial change trajectories
Untransformed HUI3 | Model 1 | Model 2 | Model 3 | |
---|---|---|---|---|
Fixed effects | ||||
Intercept | 0.882576Note ** | 0.627531Note ** | 0.952846Note ** | 1.076387Note ** |
Mean age | -0.001724Note ** | -0.000962Note ** | -0.000682Note ** | -0.005272Note ** |
Mean age squared | -0.000050Note ** | -0.000033Note ** | -0.000023Note ** | -0.000018Note ** |
Mean age cubed | -0.000004Note ** | -0.000003Note ** | -0.000002Note ** | -0.000008Note ** |
Deceased | -0.668605Note ** | -0.489359Note ** | -0.340475Note ** | -1.134217Note ** |
Institutionalized | -0.459094Note ** | -0.352409Note ** | -0.253395Note ** | -0.810786Note ** |
FemaleNote † | ... | ... | ... | ... |
Male | 0.000633 | 0.003433 | 0.002511 | 0.023969Note * |
Secondary graduation or more | ... | ... | ... | ... |
Less than secondary graduationNote † | -0.037715Note ** | -0.023636Note ** | -0.016734Note ** | -0.082577Note ** |
Married/Common-law/Living with partnerNote † | ... | ... | ... | ... |
Single | -0.01384 | -0.00743 | -0.00519 | -0.03341 |
Divorced/Separated/Widowed | -0.014254Note ** | -0.00808Note ** | -0.005672Note ** | -0.030819Note ** |
High income | ... | ... | ... | ... |
Middle income | -0.020276Note ** | -0.013019Note ** | -0.009237Note ** | -0.042748Note ** |
Low income | -0.045075Note ** | -0.029279Note ** | -0.020741Note ** | -0.091397Note ** |
Random effects | ||||
Level-1 ( (within-person)) | 0.024419Note ** | 0.010790Note ** | 0.00542Note ** | 0.106314Note ** |
Level-2 ((intercept)) | 0.016104Note ** | 0.006713Note ** | 0.003357Note ** | 0.069918Note ** |
Skewness | ||||
Level-1 | -1.35 | -1.77 | -1.88 | -0.74 |
Level-2 | -1.59 | -1.91 | -1.93 | -1.06 |
* significantly different from estimate for reference group (p<0.0005) ** significantly different from estimate for reference group (p<0.0001) † reference category ... not applicable Notes: Untransformed: HUI3 as a dependent variable. Model 1: ln (HUI3+1) as a dependent variable. Model 2: Square-root of [(HUI3+0.36)/1.36] as a dependent variable. Model 3: Arcsine of [2 × (HUI3 + 0.36) / (1 + 0.36) – 1] as a dependent variable Source: 1994/1995 to 2006/2007 National Population Health Survey, longitudinal square file. |
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