Table 2—

Types of footwear associated with increased amputation risk

Case patientsControl subjectsOR (95% CI)P
Barefoot in the garden
    Men (yes/no)38.5 (35/91)17.9 (12/67)2.86 (1.35–6.09)0.005
    Women (yes/no)31.2 (34/109)25.2 (32/127)1.35 (0.76–2.38)0.31
    All (yes/no)34.5 (69/200)22.7 (44/194)1.80 (1.15–2.80)0.01
Sneakers at work
    Men (yes/no)31.9 (29/91)22.4 (15/67)1.62 (0.80–3.34)0.19
    Women (yes/no)45.0 (49/109)27.6 (35/127)2.15 (1.25–3.69)0.005
    All (yes/no)39.0 (78/200)25.8 (50/194)1.84 (1.20–2.83)0.005
Sneakers to town
    Men (yes/no)40.0 (36/90)39.4 (26/66)1.03 (0.54–1.96)0.94
    Women (yes/no)39.4 (43/109)12.6 (16/127)4.52 (2.36–8.66)<0.001
    All (yes/no)39.7 (79/199)21.8 (42/193)2.37 (1.52–3.69)<0.001
Rubber thong sandals worn daily
    Men (yes/no)40.7 (37/91)23.9 (16/67)2.18 (1.08–4.40)0.027
    Women (yes/no)47.7 (52/109)29.1 (37/127)2.22 (1.30–3.79)0.003
    All (yes/no)44.5 (89/200)27.3 (53/194)2.13 (1.40–3.25)<0.001
Fashion footwear once weekly
    Men (yes/no)7.7 (7/91)1.5 (1/67)5.49 (0.66–45.71)0.08
    Women (yes/no)23.9 (26/109)6.3 (8/127)4.66 (2.01–10.80)<0.001
    All (yes/no)16.5 (33/200)4.6 (9/194)4.06 (1.89–8.74)<0.001
High-risk footwear*86.5 (173/200)64.9 (126/194)3.46 (2.09–5.71)<0.001
  • *

    * Composite variable comprising going barefoot in the garden, wearing sneakers to work or town, daily wearing of rubber thong sandals, or fashion footwear once weekly.