Table 4. Clinical features of subjects in Idiopathic recurrent acute pancreatitis (IRAP) subgroup with and without meandering main pancreatic duct (MMPD).
| IRAP subgroup | Inter-group | ||||
| All | MMPD | Non-MMPD | P1 | P2 | |
| (n = 10) | (n = 4) | (n = 6) | |||
| Age (years) (mean [SD]) | 56 [12.0] | 54 [9.9] | 57.3 [13.9] | 0.67b | 0.89b |
| Female (n [%]) | 8 [80] | 4 [100] | 4 [67] | 0.47c | 0.02c |
| Brinkman index (cigarettes/day×year) (mean [SD]) | 0 [0] | 0 [0] | 0 [0] | 1b | <0.0001a,b |
| Alcohol intake (kg/year) (mean [SD]) | 0.2 [0.2] | 0.3 [0.3] | 0.1 [0.2] | 0.36b | <0.0001a,b |
| Clinical history | |||||
| Pancreatitis (n [%]) | 10 [100] | 4 [100] | 6 [100] | 1c | <0.0001a,c |
| Diabetes mellitus (n [%]) | 0 [0] | 0 [0] | 0 [0] | 1c | 1c |
| Hypertension (n [%]) | 1 [10] | 0 [0] | 1 [17] | 1c | 1c |
| Hyperlipidemia (n [%]) | 0 [0] | 0 [0] | 0 [0] | 1c | 0.61c |
| Any malignant neoplasm (n [%]) | 1 [10] | 1 [25] | 0 [0] | 0.40c | 0.41c |
a
,Significant after family-wise correction;
b
,Student's t-test;
c
,Fisher's exact test; P1, P-value for the test between IRAP subjects with and without MMPD; P2, P-value for intergroup test between Community group (Table 2) and IRAP subgroup; SD, standard deviation.