Table 3 Adjusted Cox proportional hazards for the association of BMI according to MNA-SF score with 2-year all-cause mortality

 BMI ≥30.0

4661

1409 (30.2)

1

1

1

1

1

 BMI 25.0–29.9

8177

2969 (36.3)

1.13 (1.06–1.20)

1.09 (0.95–1.25)

1.11 (0.98–1.25)

1.11 (0.98–1.27)

1.22 (1.06–1.39)

 BMI 18.5–24.9

6419

2645 (41.2)

1.28 (1.20–1.37)

1.36 (1.18–1.56)

1.22 (1.08–1.38)

1.22 (1.07–1.40)

1.38 (1.20–1.58)

 BMI < 18.5

0

NA

NA

NA

NA

NA

NA

 BMI ≥ 30.0

2675

1168 (43.7)

1.60 (1.48–1.73)

1.78 (1.52–2.09)

1.61 (1.39–1.86)

1.42 (1.21–1.67)

1.62 (1.37–1.92)

 BMI 25.0–29.9

5728

2887 (50.4)

1.86 (1.74–1.98)

2.30 (2.01–2.62)

1.72 (1.52–1.93)

1.84 (1.62–2.10)

1.61 (1.39–1.86)

 BMI 18.5–24.9

11,385

6378 (56.0)

2.12 (2.00–2.25)

2.59 (2.29–2.93)

2.00 (1.79–2.23)

2.04 (1.81–2.30)

1.92 (1.69–2.19)

 BMI < 18.5

1671

1011 (60.5)

2.42 (2.23–2.63)

2.92 (2.48–3.42)

2.22 (1.90–2.59)

2.56 (2.17–3.03)

2.06 (1.69–2.51)

 BMI ≥ 30.0

291

180 (61.9)

2.86 (2.44–3.36)

4.81 (3.74–6.17)

1.85 (1.31–2.61)

2.66 (1.89–3.74)

2.20 (1.44–3.37)

 BMI 25.0–29.9

750

498 (66.4)

3.17 (2.86–3.52)

5.48 (4.62–6.51)

2.29 (1.86–2.84)

2.36 (1.86–3.01)

2.40 (1.83–3.14)

 BMI 18.5–24.9

3641

2496 (68.6)

3.25 (3.03–3.47)

5.14 (4.52–5.85)

2.71 (2.38–3.07)

2.54 (2.20–2.93)

2.38 (2.02–2.79)

 BMI < 18.5

2288

1694 (74.0)

4.01 (3.73–4.32)

6.47 (5.65–7.40)

3.36 (2.92–3.86)

2.92 (2.47–3.44)

2.69 (2.22–3.26)