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Mean age of patients with perforated stomach ulcer
| Period | Male patients age, years (SD) | Female patients age, years (SD) |
|---|---|---|
| I (1962–1976) | 51.1 (12.8) | 59.5 (21.6) |
| II (1977–1991) | 57.6 (12.7) | 54.25 (17.05)a |
| III (1992–2006) | 56.95 (15.8)c | 69.25 (17.9)b |
| I + II + III | 55.47 (13.86) | 61.06 (19.39) |
a/b difference with statistical significance (P < 0.05)
