Table 5. Late-Life Social Activity, Other Covariates and the Rate of Change in Motor Function*.
| Terms | Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | Model 6 |
|---|---|---|---|---|---|---|
| Social Activity | 0.100 (0.028, 0.172)ˆ | 0.016 (-0.046, 0.078) | 0.089 (0.016, 0.161) | 0.085 (0.013, 0.157)+ | 0.059 (-0.009, 0.127) | 0.008 (-0.051, 0.068) |
| Social Activity * Time | 0.029 (0.011, 0.047)ˆ | 0.025 (0.007, 0.043)ˆ | 0.026 (0.008, 0.044)ˆ | 0.026 (0.008, 0.044)ˆ | 0.026 (0.008, 0.044)ˆ | 0.025 (0.005, 0.045)ˆ |
| Physical Activity | 0.015 (0.005, 0.024)ˆ | 0.004 (0.004, 0.012) | 0.017 (0.009, 0.025)§ | 0.016 (0.008, 0.024)§ | 0.011 (0.003, 0.019)ˆ | 0.005 (-0.003, 0.013) |
| Physical Activity * Time | 0.001 (-0.002, 0.003) | 0.001 (-0.001, 0.003) | 0.001 (-0.001, 0.003) | 0.001 (-0.001, 0.003) | 0.001 (-0.001,0.003) | 0.001 (-0.001, 0.003) |
| Cognitive Activity | 0.161 (0.120, 0.219)§ | 0.092 (0.036, 0.152)§ | 0.109 (0.051, 0.167)§ | 0.107 (0.049, 0.165§ | 0.106 (0.051, 0.160)§ | 0.065 (0.013, 0.117)+ |
| Cognitive Activity * Time | 0.002 (-0.014,0.018) | -0.001 (-0.017,0.015) | -0.010 (-0.026, 0.006) | -0.010 (0.026, 0.006) | -0.009 (-0.025, 0.008) | -0.011 (-0.029, 0.007) |
| Global Cognition | 0.204 (0.112, 0.296)§ | 0.185 (0.097, 0.273)§ | 0.169 (0.093, 0.245)§ | 0.146 (0.082, 0.211)§ | ||
| Global Cognition * Time | 0.047 (0.023, 0.071) | 0.047 (0.023, 0.071)§ | 0.044 (-0.018, 0.069)§ | 0.043 (0.017,0.069)§ | ||
| Depressive Symptoms | -0.032 (-0.051, -0.014)§ | -0.023 (-0.041, -0.005)+ | -0.012 (-0.028, 0.004) | |||
| Depressive Symptoms * Time | -0.002 (-0.0077, 0.0034) | -0.002 (-0.008, 0.004) | -0.002 (-0.008, 0.004) | |||
| Vascular Diseases | -0.038 (-0.098,0.021) | -0.009 (-0.067, 0.049) | ||||
| Vascular Diseases * Time | 0.006 (0.010,0.539) | 0.006 (-0.014, 0.026) | ||||
| Vascular Risk Factors | -0.041 (-0.083, 0.001) | -0.024 (-0.060, 0.012) | ||||
| Vascular Risk Factors *Time | 0.000 (-0.012, 0.012) | 0.002 (-0.0097,0.145) | ||||
| BMI | -0.001 (-0.043, 0.041) | 0.007 (-0.033, 0.046) | ||||
| BMI * Time | -0.003 (-0.013, 0.007) | -0.002 (-0.012, 0.008) | ||||
| BMI*BMI | -0.000 (-0.008, 0.0006) | -0.000 (-0.0008, 0.0006) | ||||
| BMI*BMI * Time | 0.000 (-0.0002, 0.0002) | -0.000 (-0.0002, 0.0001) | ||||
| Joint Pain | -0.079 (-0.143, -0.015)+ | -0.041 (-0.010, 0.019) | ||||
| Joint Pain * Time | 0.011 (-0.009, 0.031) | 0.011 (-0.009, 0.031) | ||||
| Katz Disability | -0.127 (-0.027, -0.047)ˆ | -0.101 (-0.187, -0.015)+ | ||||
| Katz Disability * Time | -0.009 (-0.033, 0.015) | -0.012 (-0.039, 0.016) | ||||
| Rosow-Breslau Disability | -0.169 (-0.207, -0.130)§ | -0.154 (-0.192, -0.116)§ | ||||
| Rosow-Breslau Disability * Time | -0.002 (-0.013, 0.009) | -0.002 (-0.014, 0.011) | ||||
| IADL Disability | -0.063 (-0.099, -0.027)§ | -0.047 (-0.079, -0.015)ˆ | ||||
| IADL Disability*Time | -0.008 (-0.018, 0.002) | -0.006 (-0.016, 0.004) |
+
=p<0.05,
ˆ
=p<0.01,
§
=p<0.001
*
Estimate (95% Confidence Interval) for each of the terms for the different covariates and their interaction with Time added to the core model shown in table 4. Derived from generalized estimating equations each model also included terms for Lag, Age, Sex, Education and their interaction with Time.