Table 1.
Cohort characteristics and univariate analysis.
| Variable | 30-d readmission (N = 333) |
No 30-d readmission (N = 1,014) |
p-value | |
|---|---|---|---|---|
| Age in years, mean (sd) | 54.9 (9.6) | 53.1 (10.3) | 0.01 | |
|
| ||||
| Female gender, n (%) | 135 (41) | 401 (40) | 0.75 | |
|
| ||||
| Median household income in $1000, mean (sd) | 54.6 (19.8) | 58.2 (21.8) | 0.01 | |
|
| ||||
| Comorbidity index, n (%) | <0.001 | |||
| 0 | 0 (0) | 7 (0.69) | ||
| 1 | 13 (3.9) | 154 (15) | ||
| 2 | 35 (11) | 171 (17) | ||
| 3 | 30 (9.0) | 187 (18) | ||
| 4 | 34 (10) | 142 (14) | ||
| >4 | 221 (66) | 353 (35) | ||
|
| ||||
| Number of distinct diagnostic codes, mean (sd) | 110 (56.3) | 66.8 (40.6) | <0.001 | |
|
| ||||
| PCP in care constellation, n (%) | 303 (91) | 927 (92) | 0.68 | |
|
| ||||
| Cardiologist in care constellation, n (%) | 245 (74) | 746 (74) | >0.99 | |
|
| ||||
| Chronic kidney disease, n (%) | 167 (50) | 270 (27) | <0.001 | |
|
| ||||
| Diabetes, n (%) | 189 (57) | 410 (40) | <0.001 | |
|
| ||||
| Hypertension, n (%) | 303 (91) | 866 (85) | 0.01 | |
|
| ||||
| COPD, n (%) | 105 (32) | 159 (16) | <0.001 | |
|
| ||||
| Number of ties in provider constellation, mean (sd) | 35.9 (50.2) | 27.9 (40.7) | 0.01 | |
|
| ||||
| Care density, mean (sd) | 11.5 (27.4) | 13.1 (24.1) | 0.37 | |
|
| ||||
| Maximum number of shared patients, mean (sd)* | 75.4 (109) | 78.0 (123) | 0.72 | |
|
| ||||
| Mean percent of providers’ patients that are shared, mean (sd)* | 2.3 (3.0) | 2.6 (3.9) | 0.18 | |
|
| ||||
| Mean number of patients in providers’ panels, mean (sd)* | 294 (147) | 298 (153) | 0.71 | |
|
| ||||
| Median provider degree, mean (sd)* | 558 (202) | 548 (201) | 0.49 | |
|
| ||||
| Median provider connectedness, mean (sd)* | 18.3 (9.7) | 19.2 (10.9) | 0.18 | |
*
Summary measures among providers within a care constellation, reported as mean (sd) among patients in each group.
sd = standard deviation
COPD = chronic obstructive pulmonary disease
PCP = primary care provider