Table 1

Baseline characteristics of frail versus non-frail individuals, defined by PRISMA-7 score (≥3 vs <3)

PRISMA-7 ≥3
n=622
PRISMA-7 <3 n=351P value
Median length of stay in days before index discharge6.84 (SD 5.50)5.41 (SD 5.39)<0.001
Female gender, n (%)338 (54.3)232 (66.3)<0.001
Age (years), mean (SD)84.60 (5.74)80.39 (3.72)<0.001
Age, n (%)
 75–80 years180 (28.9)191 (54.4)<0.001
 81–85 years163 (26.2)140 (39.9)
 86–90 years175 (28.1)14 (4.0)
 +90 years104 (16.7)6 (1.7)
Marital status, n (%)
 Married200 (32.2)156 (44.4)<0.001
 Unmarried or widowed422 (67.8)195 (55.6)<0.001
PRISMA-7 items (Pr1–Pr7), n (%)
 Pr1: Age >85 years277 (44.5)19 (5.4)<0.001
 Pr2: Male gender284 (45.7)118 (33.6)<0.001
 Pr3: In general, do you have any health problems that require you to limit your activities?379 (60.9)16 (4.6)<0.001
 Pr4: Do you need someone to help you on a regular basis?464 (74.6)18 (5.2)<0.001
 Pr5: In general, do you have any health problems that require you to stay at home?237 (38.1)<5<0.001
 Pr6: If you need help, can you count on someone close to you?547 (87.9)321 (91.5)0.09
 Pr7: Do you regularly use a stick, walker or wheelchair to move about?527 (84.7)78 (22.2)<0.001
Department of discharge, n (%)<0.001
 Orthopaedic surgery262 (42.1)259 (73.8)
 Medical department269 (43.2)64 (18.2)
 Emergency department67 (10.8)19 (5.4)
 Other departments67 (10.8)19 (5.4)
  • PRISMA, Program of Research to Integrate Services for the Maintenance of Autonomy.