Table S2.
Member fixed effects linear regression model full output – physician office visits and injection
| Covariate | PCP visits
|
Specialist visits
|
Injection counts
|
|||
|---|---|---|---|---|---|---|
| Coefficient | p-value | Coefficient | p-value | Coefficient | p-value | |
| Male | (reference) | – | (reference) | – | (reference) | – |
| Femalea | (omitted) | – | (omitted) | – | (omitted) | – |
| Non-PT bundle cohort | (reference) | – | (reference) | – | (reference) | – |
| PT bundle cohort | (omitted) | – | (omitted) | – | (omitted) | – |
| Post-PT: 0 months | (reference) | – | (reference) | – | (reference) | – |
| Post-PT: 1–3 months | 0.109 | 0.000 | 0.124 | 0.000 | 0.024 | 0.000 |
| Post-PT: 4–6 months | −0.062 | 0.000 | −0.002 | 0.846 | 0.043 | 0.000 |
| Post-PT: 7–9 months | −0.080 | 0.000 | −0.023 | 0.109 | 0.020 | 0.015 |
| Post-PT: >9 months | −0.096 | 0.000 | −0.059 | 0.000 | 0.008 | 0.344 |
| PT bundle × 1–3 months | 0.030 | 0.059 | 0.078 | 0.000 | 0.010 | 0.331 |
| PT bundle × 4–6 months | 0.003 | 0.799 | 0.070 | 0.000 | 0.021 | 0.115 |
| PT bundle × 7–9 months | −0.031 | 0.044 | 0.017 | 0.400 | 0.005 | 0.689 |
| PT bundle × >9 months | −0.053 | 0.009 | −0.074 | 0.007 | −0.020 | 0.152 |
| Year 2013 | (reference) | – | (reference) | – | (reference) | – |
| Year 2014 | 0.047 | 0.000 | 0.063 | 0.000 | 0.001 | 0.804 |
| Age: < 40 years old | (reference) | – | (reference) | – | (reference) | – |
| Age: 40–49 | 0.758 | 0.000 | 0.278 | 0.000 | −0.017 | 0.000 |
| Age: 50–59 | 1.105 | 0.016 | −0.110 | 0.827 | −0.041 | 0.000 |
| Age: 60+ | 1.415 | 0.002 | −0.166 | 0.741 | −0.064 | 0.000 |
| No. of comorbidity: 0 | (reference) | – | (reference) | – | (reference) | – |
| No. of comorbidity: 1 | 0.099 | 0.000 | 0.120 | 0.000 | 0.015 | 0.029 |
| No. of comorbidity: 2+ | 0.180 | 0.000 | 0.206 | 0.000 | 0.023 | 0.135 |
| Age 40–49 × No. of comorbidity 1 | 0.046 | 0.240 | −0.005 | 0.915 | −0.004 | 0.904 |
| Age 40–49 × No. of comorbidity 2 | 0.031 | 0.584 | 0.097 | 0.204 | 0.011 | 0.653 |
| Age 50–59 × No. of comorbidity 1 | 0.015 | 0.674 | −0.006 | 0.870 | −0.003 | 0.836 |
| Age 50–59 × No. of comorbidity 2 | −0.024 | 0.632 | 0.071 | 0.264 | 0.002 | 0.934 |
| Age 60+ × No. of comorbidity 1 | 0.037 | 0.323 | 0.008 | 0.841 | 0.034 | 0.071 |
| Age 60+ × No. of comorbidity 2 | −0.010 | 0.852 | 0.043 | 0.468 | 0.041 | 0.072 |
| Constant | −0.579 | 0.011 | 0.149 | 0.548 | 0.035 | 0.000 |
| N (No. of member-month; No. of member) | 76,457; 4,390 | 76,457; 4,390 | 76,457; 4,390 | |||
Note:
a
Omitted due to collinearity with patient fixed effects. ‘–’ indicates not available.
Abbreviations: PCP, primary care physician; PT, physical therapy.