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Table 2 Crude and standardized 30-day mortality for patients with a first-time discharge diagnosis of perforated or bleeding peptic ulcer and 30-day mortality rate ratios (MRRs) relative to patients aged 15–64.

From: Short-term mortality after perforated or bleeding peptic ulcer among elderly patients: a population-based cohort study

Age groups

Number of patients

N

30-day mortality

Standardized 30-day mortality ∞ (95% CI)

Crude 30-day MRR (95% CI)

Adjusted 30-day MRR# (95% CI)

Perforated peptic ulcer

15–64

805

8.9%

8.9% (7.0%–10.9%)

1 (ref)

1 (ref)

65–79

743

28.5%

24.2% (20.7%–27.6%)

3.5 (2.7–4.6)

2.8 (2.1–3.6)

80+

513

46.0%

44.6% (38.8%–50.5%)

6.6 (5.1–8.6)

5.3 (4.1–7.0)

Bleeding peptic ulcer

15–64

2086

4.3%

4.3% (3.4%–5.2%)

1 (ref)

1 (ref)

65–79

2774

10.2%

8.7% (7.6%–9.9%)

2.4 (1.9–3.1)

2.2 (1.7–2.8)

80+

2372

17.0%

16.9% (15.0%–18.7%)

4.2 (3.3–5.3)

3.7 (2.9–4.7)

  1. ∞ Standardized to the distribution of gender and comorbidity in the youngest age group.
  2. # Adjusted by Cox regression analysis for gender, comorbidity prior to hospitalisation with complicated peptic ulcer, use of ulcer-related drugs and previous admissions with uncomplicated peptic ulcer.