Table 1—

Demographics of study population per original amputation level

All patientsToeRayMidfootMajorP
n277611143864
Male188 (67.9)37 (60.7)81 (71.1)31 (81.6)39 (60.9)0.08
Ethnicity
    White33 (11.9)12 (19.7)9 (7.9)4 (10.5)8 (12.5)
    Hispanic221 (79.8)47 (77.0)95 (83.3)26 (68.4)53 (82.8)
    Black22 (7.9)1 (1.6)10 (8.8)8 (21.1)3 (4.7)
    Others1 (0.4)1 (1.6)a,b0 (0.0)a0 (0.0)b,c0 (0.0)ca: 0.01; b: 0.04; c: 0.03
Age at first amputation53.8 ± 10.453.3 ± 10.952.4 ± 10.5a51.7 ± 9.5b58.0 ± 9.4a,ba: 0.002; b: 0.01
PAD117 (42.2)29 (47.5)a34 (29.8)a,b13 (34.2)c41 (64.1)b,ca: 0.02; b: <0.0001; c: 0.003
End-stage renal disease31 (11.2)7 (11.5)a4 (3.5)a,b4 (10.5)16 (25.0)ba: 0.03; b: <0.0001
Left or/and right bypass66 (23.8)21 (34.4)a27 (23.7)8 (21.1)10 (15.6)aa: 0.01
Smoker
    Yes89 (32.1)16 (26.2)42 (36.8)17 (44.7)14 (21.9)
    No105 (37.9)26 (42.6)46 (40.4)13 (34.2)20 (31.3)
    Quit37 (13.4)11 (18.0)17 (14.9)0 (0.0)9 (14.1)
    Unknown46 (16.6)8 (13.1)9 (7.9)8 (21.1)21 (32.8)0.22
Deceased by 31 December95 (34.3)20 (32.8)a29 (25.4)b10 (26.3)c36 (56.3)a,b,ca: 0.008; b: 0.0006; c: 0.003
    2003
Follow-up time (years)
    Average4.7 ± 2.95.4 ± 2.7a5.4 ± 2.5b4.4 ± 33.3 ± 2.9a,ba: 0.0006; b: 0.0001
    Range0.005–10.60.09–9.90.02–10.60.008–10.40.005–10.6
    Median (interquartile)5.2 (2.2–6.8)5.6 (2.7–7.7)6.1 (3.5–7.1)4.1 (2.0–6.6)2.8 (0.4–5.9)
  • Data are n (%), means ± SD, or median (interquartile range).