Table 1 Demographic characteristics of patients with acute appendicitis and controls (n = 7148).
From: Acute Appendicitis Is Associated with Peptic Ulcers: A Population-based Study
Variable | Patients with acute appendicitis n = 3574 | Controls n = 3574 | |||
|---|---|---|---|---|---|
Total no. | Column % | Total no. | Column % | p value | |
Male | 1851 | 51.8 | 1851 | 51.8 | >0.999 |
Age group | >0.999 | ||||
18~29 | 924 | 25.9 | 924 | 25.9 | |
30~39 | 776 | 21.7 | 776 | 21.7 | |
40~49 | 661 | 18.5 | 661 | 18.5 | |
50~59 | 583 | 16.3 | 583 | 16.3 | |
60~69 | 296 | 8.3 | 296 | 8.3 | |
Urbanization level | 0.951 | ||||
1 (most) | 1146 | 32.1 | 1132 | 31.7 | |
2 | 993 | 27.8 | 995 | 27.8 | |
3 | 547 | 15.3 | 571 | 16.0 | |
4 | 480 | 13.4 | 476 | 13.3 | |
5 (least) | 408 | 11.4 | 400 | 11.2 | |
Monthly income | 0.067 | ||||
NT$0~15,840 | 1582 | 44.3 | 1490 | 41.7 | |
NT$15,841~25,000 | 1143 | 32.0 | 1171 | 32.8 | |
≥NT$25,001 | 849 | 23.7 | 913 | 25.5 | |
Geographic region | 0.132 | ||||
Northern | 1738 | 48.6 | 1758 | 49.2 | |
Central | 798 | 22.3 | 815 | 22.8 | |
Southern | 932 | 26.1 | 926 | 25.9 | |
Eastern | 106 | 3.0 | 75 | 2.1 | |
Co-morbidities | |||||
Hypertension | 631 | 17.7 | 712 | 19.9 | 0.014 |
Diabetes | 286 | 8.0 | 333 | 9.3 | 0.048 |
Hyperlipidemia | 484 | 13.5 | 489 | 13.7 | 0.863 |
Congestive heart failure | 58 | 1.6 | 72 | 2.0 | 0.215 |
Chronic renal failure | 70 | 2.0 | 74 | 2.1 | 0.736 |
Cirrhosis | 116 | 3.3 | 93 | 2.6 | 0.106 |
Malignancy | 101 | 2.8 | 101 | 2.8 | 1.000 |
