Table 3 Age-stratified relationship between BMI and 30 day mortality among hospitalized patients with CDI, after adjusting for other factors

Cochran-armitage p for trend

 BMI (per category increase)^a

0.33

0.14

0.37

Adjusted odds ratios and 95% confidence intervals

 BMI categories

  BMI < 20

0.89 (0.27–2.63)

0.50 (0.19–1.17)

0.56 (0.23–1.27)

  BMI 20–25

Reference

Reference

Reference

  BMI 25–30

0.86 (0.31–2.27)

0.85 (0.50–1.43)

0.85 (0.47–1.53)

  BMI 30–35

1.12 (0.36–3.19)

0.69 (0.35–1.30)

1.04 (0.44–2.33)

  BMI 35–40

4.58 (1.20–16.06)

0.90 (0.38–1.95)

0.23 (0.01–1.30)

  BMI 40–45

1.10 (0.06–7.03)

1.04 (0.31–2.96)

0.68 (0.03–5.34)

  BMI > 45

1.19 (0.16–5.48)

1.36 (0.41–4.01)

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