Table 7.
Follow-up Interview Rates and Subpopulation Comparison
| Time of interview | 3-month post-discharge | 9-month post-discharge | 1-year post-injury* | Any follow-up data† |
|---|---|---|---|---|
| Interview conducted | 1742 | 1649 | 1605 | 1850 |
| Deceased or incarcerated | 40 | 92 | 69 | 92 |
| Lost to follow-up | 199 | 240 | 307 | 39 |
| Ineligible for follow-up | 149 | 149 | 149 | 149 |
| % with interview conducted | 81.8% | 77.4% | 75.4% | 86.9% |
| % with known outcome‡ | 83.7% | 81.7% | 78.6% | 91.2% |
| Characteristic | 3-month post-discharge (n=1742) | 9-month post-discharge (n=1649) | 1-year post-injury (n=1605) | Any follow-up data (n=1850) | Full Sample (n=2130§) |
|---|---|---|---|---|---|
| Age at rehabilitation admission (mean, SD) | 43.7 (20.8) | 43.3 (20.9) | 43.3 (20.9) | 43.8 (20.9) | 44.5 (21.3) |
| Male (%) | 72.7 | 71.9 | 71.6 | 72.4 | 72.5 |
| Race/Ethnicity (%) | |||||
| Black | 14.5 | 13.9 | 13.8 | 14.6 | 15.1 |
| White | 77.0 | 77.2 | 77.8 | 76.1 | 74.4 |
| White Hispanic | 5.1 | 5.3 | 5.0 | 5.6 | 6.2 |
| Other and unknown | 3.5 | 3.6 | 3.4 | 3.7 | 4.4 |
| Highest education achieved (%) | |||||
| Some high school, no diploma | 23.4 | 23.3 | 23.1 | 23.7 | 23.0 |
| High school diploma | 25.9 | 26.0 | 26.1 | 26.2 | 25.9 |
| Work towards or completed | 17.2 | 18.8 | 18.6 | 17.7 | 16.2 |
| Associate’s degree | |||||
| Work towards or completed | 20.2 | 20.4 | 20.7 | 19.9 | 19.7 |
| Bachelor’s degree | |||||
| Work towards or completed | 10.2 | 10.4 | 10.2 | 10.0 | 9.7 |
| Master’s/Doctoral degree | |||||
| Unknown | 3.0 | 1.2 | 1.2 | 2.5 | 5.7 |
| Primary payer for inpatient stay (%) | |||||
| Medicare | 18.7 | 18.0 | 18.3 | 18.9 | 19.4 |
| Medicaid | 16.7 | 15.6 | 15.6 | 16.4 | 15.5 |
| Private insurance | 25.1 | 25.1 | 25.2 | 24.6 | 24.5 |
| Centralized (single payer system) | 6.2 | 6.4 | 5.9 | 6.3 | 6.9 |
| Worker’s compensation | 5.9 | 5.9 | 5.9 | 5.9 | 6.8 |
| Self pay/None | 4.8 | 5.0 | 5.1 | 4.8 | 4.6 |
| MCO/HMO | 15.4 | 16.1 | 16.2 | 15.2 | 14.4 |
| No-fault auto insurance | 4.1 | 4.7 | 4.5 | 4.6 | 4.5 |
| Other/unknown | 3.0 | 3.2 | 3.2 | 3.2 | 3.4 |
| Marital status at injury (%) | |||||
| Single/never married | 43.7 | 44.0 | 44.2 | 43.1 | 42.6 |
| Married/common law | 35.8 | 35.9 | 35.8 | 36.3 | 36.5 |
| Previously married | 17.0 | 16.7 | 16.7 | 17.1 | 17.5 |
| Other/unknown | 3.5 | 3.4 | 3.4 | 3.5 | 3.5 |
| Employment prior to injury (%) | |||||
| Employed and student | 4.0 | 4.2 | 4.2 | 4.1 | 4.0 |
| Employed only | 46.8 | 47.7 | 47.3 | 47.0 | 47.1 |
| Unemployed | 14.4 | 13.8 | 14.1 | 14.2 | 13.3 |
| Retired | 21.9 | 21.3 | 21.5 | 22.3 | 23.1 |
| Student only | 11.8 | 11.8 | 11.8 | 11.4 | 11.4 |
| Unknown | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 |
| Brain injury component of admission CSI score (mean, SD) | 45.7 (23.8) | 46 (23.7) | 45.7 (23.6) | 45.5 (23.7) | 44.7 (23.7) |
| Non-brain injury component of admission CSI score (mean, SD) | 17.1 (15.1) | 17.2 (14.9) | 17.1 (15.1) | 17.0 (15.1) | 16.9 (15.0) |
| Admission FIM cognitive score - untransformed (mean, SD) | 14.6 (7.2) | 14.6 (7.1) | 14.7 (7.2) | 14.7 (7.2) | 14.8 (7.2) |
| Admission FIM motor score - untransformed (mean, SD) | 34.0 (19.4) | 33.9 (19.5) | 34.2 (19.5) | 34.3 (19.5) | 34.7(19.7) |
NOTE: Abbreviations: MCO/HMO, Managed care organization/Health maintainance organization; CSI, Comprehensive Severity Index;
Because the anniversary date for a person’s injury could fall in the window for any post-discharge interview (3 month had a window from 56 to 189 days post-discharge; 9-month had a window from 208 to 402 days post-discharge), the additional questions required were included in the follow-up interview that fell within the window of a post-discharge interview.
At the commencement of the study there were also 6-month post-discharge interviews, however this facet of the study was discontinued due to feasibility issues.
Includes interviewed patients and those who were deceased or incarcerated at the indicated interview time.
n=10 patients missing admission FIM cognitive score.