Table 4 Univariate analysis comparing patients readmitted within the 30-day time period with concordant and discordant diagnoses
|  | Concordant diagnosis ( n  = 316) | Discordant diagnosis ( n  = 340) | p |
|---|---|---|---|
Age (years) | 76 ± 13 | 81 ± 8 | <0.001 |
Sex (male/female) | 140/176 | 132/208 | NS |
Deceased (n = 115) | 52 (45.2%) | 63 (54.8%) | NS |
Admission due to cardiovascular disease (n = 192) | 105 (54.7%) | 87 (45.3%) | 0.032 |
Admission due to pulmonary disease (n = 195) | 110 (56.4%) | 85 (43.6%) | 0.006 |
Admission due to neurological disease (n = 66) | 24 (36.4%) | 42 (63.6%) | 0.043 |
Admission due to gastrointestinal disease (n = 110) | 46 (41.8%) | 64 (58.2%) | NS |
Admission due to neoplastic disease (n = 82) | 49 (60.5%) | 32 (39.5%) | 0.018 |
Admission due to renal disease (n = 44) | 12 (27.3%) | 32 (72.7%) | 0.004 |
Miscellaneous (n = 186) | 72 (38.7%) | 114 (61.3%) | 0.002 |
Total time in the ED | 2:05 ± 2:58 | 2:08 ± 1:26 | 0.015 |
Length of stay, previous admission (days) | 7.9 ± 6.9 | 8.9 ± 6.8 | 0.010 |
Days prior to admission (days) | 13.5 ± 8.3 | 13.2 ± 8.7 | NS |