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. 2021 Mar 23;21:201. doi: 10.1186/s12877-021-02137-6

Table 3.

Levels and rates of change in the physical disability trajectory after diagnosis for each chronic condition

Fixed effect Goodness of fit
Intercept Linear change Quadratic change -2LL Parameters LR test △χ2 (△df)
Hypertension Model 0 1.858 (1.615–2.101) 0.087 (0.046–0.129) 0.010 (0.009–0.012) 25,401.7 7
Model 1 1.028 (0.735–1.320) 0.174 (0.132–0.216) 0.007 (0.005–0.008) 24,851.0 12 550.7 (5)***
Model 2 0.441 (0.150–0.731) 0.154 (0.113–0.196) 0.006 (0.005–0.008) 24,591.9 13 259.1 (1)***
Model 3 0.271 (0.030–0.512) 0.120 (0.085–0.156) 0.004 (0.003–0.006) 21,169.2 15 3422.7 (2)***
Heart disease Model 0 2.538 (2.223–2.853) 0.155 (0.102–0.207) 0.008 (0.006–0.010) 16,068.7 7
Model 1 1.358 (0.959–1.756) 0.235 (0.183–0.288) 0.004 (0.002–0.007) 15,684.4 12 384.3 (5)***
Model 2 0.425 (0.009–0.841) 0.222 (0.170–0.274) 0.004 (0.002–0.006) 15,563.0 13 121.4 (1)***
Model 3 0.558 (0.208–0.908) 0.161 (0.117–0.205) 0.003 (0.001–0.004) 13,317.3 15 2245.7 (2)***
Stroke Model 0 8.104 (7.203–9.004) 0.203 (0.041–0.364) 0.005(−0.004–0.014) 3632.9 7
Model 1 5.104 (4.040–6.169) 0.288 (0.129–0.447) 0.001(− 0.007–0.010) 3510.6 12 122.3 (5)***
Model 2 4.509 (3.293–5.724) 0.289 (0.130–0.449) 0.001(−0.008–0.009) 3506.7 13 3.9 (1)*
Model 3 3.018 (1.861–4.175) 0.215 (0.054–0.376) 0.002(− 0.007–0.010) 2495.0 15 1011.7 (2)***
Diabetes Model 0 2.887 (2.442–3.332) 0.080(−0.001–0.161) 0.014 (0.010–0.017) 9469.6 7
Model 1 2.209 (1.676–2.742) 0.173 (0.091–0.255) 0.009 (0.005–0.012) 9207.5 12 262.1 (5)***
Model 2 1.080 (0.517–1.643) 0.166 (0.086–0.247) 0.008 (0.004–0.011) 9102.6 13 104.9 (1)***
Model 3 0.805 (0.331–1.278) 0.105 (0.037–0.172) 0.006 (0.003–0.009) 7680.5 15 1422.1 (2)***
Cancer Model 0 3.693 (2.880–4.506) 0.013(−0.137–0.163) 0.013 (0.007–0.020) 2554.0 7
Model 1 2.053 (1.079–3.027) 0.133(−0.015–0.282) 0.009 (0.002–0.016) 2467.9 12 86.1 (5)***
Model 2 1.156 (0.172–2.141) 0.088(−0.063–0.238) 0.009 (0.003–0.016) 2442.1 13 25.8 (1)***
Model 3 0.542(−0.184–1.268) 0.079(− 0.041–0.198) 0.007 (0.001–0.012) 2011.6 15 430.5 (2)***
Lung disease Model 0 2.526 (2.100–2.953) 0.200 (0.144–0.257) 0.003 (0.002–0.005) 10,865.3 7
Model 1 1.336 (0.863–1.810) 0.305 (0.251–0.360) −0.0004(−0.002–0.001) 10,486.0 12 379.3 (5)***
Model 2 0.681 (0.192–1.170) 0.291 (0.236–0.345) −0.001(− 0.003–0.001) 10,427.1 13 58.9 (1)***
Model 3 0.366(−0.017–0.750) 0.213 (0.175–0.250) − 0.001(− 0.002 to − 0.0003) 8713.5 15 1713.6 (2)***
Arthritis Model 0 2.205 (1.942–2.468) 0.119 (0.077–0.161) 0.007 (0.005–0.008) 22,100.0 7
Model 1 1.466 (1.132–1.800) 0.226 (0.184–0.268) 0.003 (0.002–0.005) 21,496.9 12 603.1 (5)***
Model 2 0.833 (0.492–1.174) 0.204 (0.162–0.245) 0.003 (0.001–0.004) 21,353.7 13 143.2 (1)***
Model 3 0.613 (0.322–0.903) 0.183 (0.146–0.219) 0.001(−0.001–0.002) 18,683.7 15 2670.0 (2)***

Scores of physical disability are the total of limitations in ADL, IADL, and mobility (range 0–17)

Bold numbers and *indicate statistical significance (p < 0.05), ***indicate statistical significance (p < 0.001)

Model 0: Duration after diagnosis and (duration after diagnosis)2

Model 1: Model 0 + age at diagnosis (centered to 70 years old), gender, education level

Model 2: Model 1 + number of comorbidities over time

Model 3: Model 2 + depression status over time