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Table 4 The association of BMI with the risk of selected subtypes of cancer in T2DM patients

From: Body mass index and cancer risk among Chinese patients with type 2 diabetes mellitus

Gender subtypes of cancer Categories of BMI < 60 years old > 60 years old
No. of cancer cases HR 95%CI No. of cancer cases HR 95%CI
Male All sites of cancer < 18.5 11 1.42 0.78–2.61 38 1.21 0.87–1.68
18.5–24.9 241 1(ref)   616 1(ref)  
25.0–29.9 128 0.89 0.72–1.11 301 0.98 0.86–1.13
≥30.0 23 1.4 0.91–2.15 29 0.98 0.68–1.43
Female All sites of cancer BMI as a continuous variable   non-linearity   833 1.03 1.01–1.05
< 18.5 9 0.95 0.49–1.85 23 0.9 0.59–1.36
18.5–24.9 295 1(ref)   468 1(ref)  
25.0–29.9 214 1.22 1.02–1.46 284 1.15 0.99–1.33
≥30.0 26 0.86 0.58–1.29 58 1.44 1.10–1.90
Breast cancer BMI as a continuous variable   non-linearity   123 1.07 1.01–1.13
< 18.5 1 0.40 0.06–2.90 4 1.38 0.50–3.82
18.5–24.9 78 1(ref)   61 1(ref)  
25.0–29.9 46 0.96 0.67–1.39 46 1.36 0.93–2.00
≥30.0 10 1.2 0.62–2.33 12 2.19 1.18–4.07