Table 3 Seasonal distribution of PUD hospital admission: results of chronobiological time series analysis.
|  |  | n | PR | MESOR (± SE) | Peak (1°, 2°, 3°) | Nadir | P* |
|---|---|---|---|---|---|---|---|
Total cases | Â | 26,848 | 83.3 | 2,236 (26.38) | Sept/oct, Jan/Feb, Apr/May | July | 0.035 |
Males | Â | 16,795 | 78.0 | 1,398.69 (20.43) | Sept/Oct, Jan/Feb, Apr/May | July | 0.064 |
Females | Â | 10,053 | 87.1 | 837.43 (9.24) | Sept/Oct, Apr/May, Jan/Feb | July | 0.032 |
Age < 65 yrs | Â | 7,151 | 73.8 | 595.77 (8.89) | Sept/Oct, Jan/Feb, Apr/May | July | 0.144 |
Age 65-74 yrs | Â | 8,849 | 86.8 | 736.75 (9.60) | Jan/Feb, Sept/Oct, Apr/May | July | 0.022 |
Age > 75 yrs | Â | 10,848 | 71.8 | 903.60 (14.80) | Sept/Oct, Apr/May, Jan/Feb | July | 0.123 |
Final outcome: fatal | Â | 1,290 | 58.7 | 107.48 (3.03) | Dec/Jan, Apr/May, Aug/Sept | October | 0.407 |
Final outcome: non-fatal | Â | 25,558 | 83.6 | 2,128.64 (25.71) | Sept/Oct, Jan/Feb, Apr/May | July | 0.067 |
With hemorrhage | Â | 12,682 | 63.3 | 1,056.51 (18.37) | Sept/Oct, Jan/Feb, Apr/May | July | 0.153 |
With perforation | Â | 2,541 | 29.0 | 211.73 (7.62) | Mar/May, Sept/Nov, - | July | 0.949 |
Gastric ulcer | Total | 976 | 96.3 | 81.25 (0.83) | Sept/Oct, Jan/Feb, Apr/May | July | 0.002 |
| Â | Acute | 734 | 88.7 | 61.11 (1.04) | Sept/Oct, Jan/Feb, Apr/May | July | 0.021 |
| Â | Chronic | 242 | 75.6 | 20.13 (0.80) | Sept/Oct, Jan/Feb, Apr/May | July | 0.161 |
Duodenal ulcer | Total | 24,105 | 82.7 | 2,007.72 (24.40) | Sept/Oct, Jan/Feb, Apr/May | July | 0.036 |
| Â | Acute | 12,180 | 95.1 | 1,014.62 (6.21) | Sept/Oct, Apr/May, Jan/Feb | July | 0.002 |
| Â | Chronic | 7,415 | 73.5 | 617.98 (17.35) | Sept/Nov, Apr/Jun, - | July | 0.083 |