Table 4.
Comparison of demographic and select risk factors between idiopathic chronic pancreatitis and control subjects in the North American Pancreatitis Study 2
| Variable | Idiopathic chronic pancreatitis | NAPS 2 controls | Univariate p- value | ||
|---|---|---|---|---|---|
| n* | n* | ||||
| Mean age (sd) | 50.0±18.5 | 154 | 52.2 ±14.5 | 694 | 0.17 |
| Male sex (%) | 64 (41.6) | 154 | 249 (35.8) | 695 | 0.21 |
| White race (%) | 138 (89.6) | 154 | 606 (87.4) | 693 | 0.54 |
| Maximum BMI (kg/m2) (%) | 120 | 643 | 0.18 | ||
| Normal/Low | 26 (21.7) | 128 (19.9) | |||
| Overweight | 49 (40.8) | 220 (34.2) | |||
| Obese | 45 (37.5) | 295 (45.9) | |||
| Current BMI (kg/m2) (%) | 148 | 682 | <0.001 | ||
| Normal/Low | 80 (54.1) | 233 (34.2) | |||
| Overweight | 48 (32.4) | 253 (37.1) | |||
| Obese | 20 (13.5) | 196 (28.7) | |||
| At-risk drinking (%) | 8 (5.2) | 154 | 85 (12.2) | 695 | < 0.02 |
| Ever smoker (%) | 89 (58.6) | 152 | 342 (49.7) | 688 | < 0.05 |
| Current smoker (%) | 45 (29.6) | 152 | 140 (20.3) | 688 | 0.01 |
| Renal disease or failure (%) | 8 (5.2) | 154 | 8 (1.2) | 695 | < 0.01 |
Specific data points were missing for some patients.
At-risk drinking - Individuals who met criteria for at-risk drinking using the TWEAK questionnaire. A reference period (in the months before getting pancreatitis) was used for pancreatitis subjects but not for control subjects.
The presence of renal disease or failure was extracted from the patient questionnaire.
Maximum BMI = Calculated based on the patient's self-reported highest weight (ever).
Current BMI = Calculated based on the patient's weight at the time of enrollment into NAPS2
BMI (body-mass index) (kg/m2) categories: normal/low: <25; overweight: 25–30; obese: ≥30