Table 2.
Outcome coefficients for HFRS calculated with progressively more previous admissions
|
Length of stay (OR) |
In-hospital deaths (HR) |
30-day readmission (AME) |
|||||
|---|---|---|---|---|---|---|---|
| HFRS intermediate | HFRS high | HFRS intermediate | HFRS high | HFRS | intermediate | HFRS high | |
| Current admission alone (a) | 2·66* (2·61 to 2·70) | 5·47* (5·32 to 5·62) | 1·96* (1·92 to 2·01) | 2·24* (2·17 to 2·31) | −0·003* (−0·005 to −0·001) | −0·027* (−0·031 to −0·023) | |
| 1-year window | |||||||
| Current admission plus previous admission in preceding year (a + 1,1) | 2·58* (2·53 to 2·63) | 4·75* (4·64 to 4·87) | 2·15* (2·10 to 2·21) | 2·53* (2·45 to 2·61) | 0·001 (−0·002 to 0·003) | −0·020* (−0·023 to −0·016) | |
| Current admission plus previous 2 admissions in preceding year (a + 2,1) | 2·61* (2·56 to 2·66) | 4·76* (4·64 to 4·88) | 2·22* (2·16 to 2·28) | 2·62* (2·54 to 2·71) | 0·003* (0·001 to 0·006) | −0·017* (−0·020 to −0·013) | |
| Current admission plus previous 3 admissions in preceding year (a + 3,1) | 2·64* (2·58 to 2·69) | 4·80* (4·68 to 4·92) | 2·24* (2·18 to 2·30) | 2·63* (2·55 to 2·73) | 0·005* (0·002 to 0·008) | −0·016* (−0·020 to −0·013) | |
| Current admission plus previous 4 admissions in preceding year (a + 4,1) | 2·64* (2·59 to 2·70) | 4·83* (4·71 to 4·96) | 2·25* (2·18 to 2·31) | 2·65* (2·57 to 2·74) | 0·006* (0·004 to 0·009) | −0·013* (−0·017 to −0·010) | |
| Current admission plus previous n admissions in preceding year (a + n,1) | 2·65* (2·60 to 2·70) | 4·82* (4·70 to 4·94) | 2·25* (2·19 to 2·31) | 2·66* (2·57 to 2·75) | 0·009* (0·006 to 0·011) | −0·004* (−0·007 to −0·000) | |
| 2-year window | |||||||
| Current admission plus previous admission in preceding 2 years (a + 1,2) | 2·50* (2·45 to 2·55) | 4·50* (4·39 to 4·61) | 2·12* (2·06 to 2·17) | 2·45* (2·37 to 2·53) | 0·003* (0·001 to 0·006) | −0·015* (−0·018 to −0·012) | |
| Current admission plus previous 2 admissions in preceding 2 years (a + 2,2) | 2·50* (2·45 to 2·55) | 4·34* (4·24 to 4·45) | 2·17* (2·11 to 2·23) | 2·48* (2·40 to 2·56) | 0·007* (0·004 to 0·010) | −0·009* (−0·012 to −0·005) | |
| Current admission plus previous 3 admissions in preceding 2 years (a + 3,2) | 2·51* (2·46 to 2·56) | 4·31* (4·21 to 4·42) | 2·19* (2·12 to 2·25) | 2·47* (2·39 to 2·56) | 0·010* (0·007 to 0·012) | −0·006* (−0·009 to −0·003) | |
| Current admission plus previous 4 admissions in preceding 2 years (a + 4,2) | 2·51* (2·46 to 2·57) | 4·32* (4·21 to 4·42) | 2·19* (2·13 to 2·26) | 2·47* (2·39 to 2·55) | 0·011* (0·009 to 0·014) | −0·003 (−0·006 to 0·001) | |
| Current admission plus previous n admissions in preceding 2 years (a + n,2) | 2·52* (2·47 to 2·57) | 4·26* (4·16 to 4·37) | 2·20* (2·14 to 2·26) | 2·47* (2·39 to 2·55) | 0·014* (0·011 to 0·016) | 0·010* (0·007 to 0·014) | |
Data are coefficients (95% CI), using low frailty risk as the reference category and after adjusting for all control variables. OR=odds ratio. HFRS=Hospital Frailty Risk Score. HR=hazard ratio. AME=average marginal effect.
*
Coefficient is significant (p<0·05).