Demographic and clinical characteristics by pain pattern in patients with chronic pancreatitis in the NAPS2 study
| Variable | All patients | Pain pattern | ||||
| A | B | C | D | E | ||
| Number (%) | 414 (100) | 58 (14.0) | 38 (9.2) | 128 (30.9) | 158 (38.2) | 32 (7.7) |
| Gender | ||||||
| Male | 205 (49.5) | 31 (53.4%) | 21 (55.3%) | 67 (52.3%) | 72 (45.6%) | 14 (43.8%) |
| Age (mean±SD) | 48.9±15.4 | 51.7±15.6 | 47.7±12.7 | 50.2±17.7 | 47.8±14.1 | 46.5±14.1 |
| Race | ||||||
| White | 344 (83.3) | 48 (84.2) | 28 (73.7) | 112 (87.5) | 132 (83.5) | 24 (75.0) |
| Black | 50 (12.1) | 7 (12.3) | 9 (23.7) | 12 (9.4) | 15 (9.5) | 7 (21.9) |
| Others or mixed | 19 (4.6) | 2 (3.5) | 1 (2.6) | 4 (3.1) | 11 (7.0) | 1 (3.1) |
| Body mass index (current) | ||||||
| Normal or low | 239 (58.9) | 33 (56.9) | 17 (47.2) | 76 (60.8) | 94 (60.3) | 19 (61.3) |
| Overweight | 120 (29.6) | 18 (31.0) | 16 (44.4) | 34 (27.2) | 45 (28.8) | 7 (22.6) |
| Obese | 47 (11.6) | 7 (12.1) | 3 (8.3) | 15 (12.0) | 17 (10.9) | 5 (16.1) |
| Drinking category (%) | ||||||
| Abstainer | 95 (23.0) | 11 (19.0) | 5 (13.2) | 37 (29.1) | 31 (19.6) | 11 (34.4) |
| Light | 79 (19.1) | 16 (27.6) | 8 (21.1) | 22 (17.3) | 33 (20.9) | 0 (0.0) |
| Moderate | 84 (20.3) | 16 (27.6) | 4 (10.5) | 27 (21.3) | 34 (21.5) | 3 (9.4) |
| Heavy | 48 (11.6) | 5 (8.6) | 4 (10.5) | 15 (11.8) | 18 (11.4) | 6 (18.8) |
| Very heavy | 107 (25.9) | 10 (17.2) | 17 (44.7) | 26 (20.5) | 42 (26.6) | 12 (37.5) |
| Smoking (%) | ||||||
| Never | 120 (29.1) | 17 (29.8) | 7 (18.4) | 48 (37.8) | 41 (25.9) | 7 (21.9) |
| Past | 96 (23.3) | 17 (29.8) | 11 (28.9) | 27 (21.3) | 34 (21.5) | 7 (21.9) |
| Current | 196 (47.6) | 23 (40.4) | 20 (52.6) | 52 (40.9) | 83 (52.5) | 18 (56.3) |
| Amount of smoking (%) | ||||||
| Never | 120 (29.9) | 17 (30.9) | 7 (18.4) | 48 (38.7) | 41 (26.6) | 7 (23.3) |
| <1 packs/day | 116 (28.9) | 13 (23.6) | 17 (44.7) | 32 (25.8) | 47 (30.5) | 7 (23.3) |
| ≥1 packs/day | 165 (41.1) | 25 (45.5) | 14 (36.8) | 44 (35.5) | 66 (42.9) | 16 (53.3) |
| Acute pancreatitis ever (%) | ||||||
| Yes | 268 (65.2) | 32 (57.1) | 26 (68.4) | 90 (70.3) | 100 (63.7) | 20 (62.5) |
| No | 73 (17.8) | 13 (23.2) | 4 (10.5) | 16 (12.5) | 35 (22.3) | 5 (15.6) |
| Unclear | 70 (17.0) | 11 (19.6) | 8 (21.1) | 22 (17.2) | 22 (14.0) | 7 (21.9) |
| Alcohol diagnosis by physicians* | ||||||
| Yes (%) | 189 (45.7) | 20 (34.5) | 21 (55.3) | 55 (43) | 75 (47.5) | 18 (56.3) |
| Regular use of pain medication (%) (n=330) | ||||||
| Yes | 156 (47.3) | 13 (26.0) | 23 (76.7) | 24 (20.7) | 79 (71.8) | 17 (70.8) |
| No | 174 (52.7) | 37 (74.0) | 7 (23.3) | 92 (79.3) | 31 (28.2) | 7 (29.2) |
| Disability (%) (n=399) | ||||||
| Yes | 123 (30.8) | 8 (14.0) | 15 (42.9) | 24 (19.0) | 58 (38.2) | 18 (62.1) |
| No | 276 (69.2) | 49 (86.0) | 20 (57.1) | 102 (81.0) | 94 (61.8) | 11 (37.9) |
↵* Alcohol considered as a working diagnosis or risk factor with or without other diagnoses.