Table 1.
Baseline characteristics
| Total cohort (n = 447) | No PCD (n = 332) | PCD (n = 115) | P § | |
|---|---|---|---|---|
| Patient demographics | ||||
| Age (years)* | 61 (13) | 60 (13) | 63 (13) | 0·140¶ |
| Sex ratio (M : F) | 182 : 265 | 139 : 193 | 43 : 72 | 0·400 |
| BMI (kg/m2)* | 27·8 (5·7) | 27·6 (5·5) | 28·4 (6·3) | 0·404¶ |
| Smoking | 228 (51·0) | 167 (50·3) | 61 (53·0) | 0·603 |
| Alcohol consumption | 232 (51·9) | 178 (53·6) | 54 (47·0) | 0·274 |
| Co‐morbidities | ||||
| ASA fitness grade > II | 123 (27·5) | 84 (25·3) | 39 (33·9) | 0·075 |
| Patients with registered co‐morbidity | 271 (60·6) | 201 (60·5) | 70 (60·9) | 0·952 |
| Medical history | ||||
| History of diverticulitis | 137 (30·6) | 93 (28·0) | 44 (38·3) | 0·035 |
| History of abdominal surgery | 151 (33·8) | 119 (35·8) | 32 (27·8) | 0·130 |
| Medication | ||||
| NSAIDs | 182 (40·7) | 133 (40·1) | 49 (42·6) | 0·573 |
| Steroids | 43 (9·4) | 35 (10·5) | 8 (7·0) | 0·239 |
| Clinical symptoms | ||||
| Duration of symptoms (days)† | 7 (3–14) | 7 (3–12) | 8 (4–14) | 0·062# |
| Nausea | 236 (52·8) | 163 (49·1) | 73 (63·5) | 0·018 |
| Vomiting | 108 (24·2) | 65 (19·6) | 43 (37·4) | 0·001 |
| Diffuse abdominal pain | 61 (13·6) | 44 (13·3) | 16 (13·9) | 0·704** |
| Change in bowel habit | 294 (65·8) | 221 (66·6) | 73 (63·5) | 0·548 |
| Rectal blood loss | 70 (15·7) | 44 (13·3) | 26 (22·6) | 0·044 |
| Clinical signs | ||||
| Rebound tenderness | 141 (31·5) | 104 (31·3) | 37 (32·1) | 0·602 |
| Local muscular guarding/resistance | 115 (25·7) | 81 (24·4) | 34 (29·6) | 0·259 |
| Diffuse muscular guarding | 50 (11·2) | 32 (9·6) | 18 (15·7) | 0·255** |
| Temperature (°C)* | 37·7 (0·9) | 37·7 (0·9) | 37·8 (1·0) | 0·319¶ |
| Laboratory parameters* | ||||
| C‐reactive protein (mg/l) | 168 (106) | 149 (96) | 222 (114) | < 0·001¶ |
| White blood cell count (× 109/l) | 14·8 (5·2) | 14·3 (4·9) | 16·3 (5·6) | 0·001¶ |
| Radiological parameters | ||||
| Hinchey II‡ | 232 (51·9) | 135 (40·7) | 97 (84·3) | < 0·001 |
| Largest abscess diameter (cm)† | 4·2 (2·7–6·1) | 3·6 (2·5–5·1) | 6·4 (5·0–8·5) | < 0·001# |
| Distant location of abscess | 106 (23·7) | 71 (21·4) | 35 (30·4) | 0·046 |
| No. of patients with multiple abscesses | 63 (14·1) | 40 (12·0) | 23 (20·0) | 0·035 |
| Free peridiverticular air | 143 (32·0) | 106 (31·9) | 37 (32·2) | 0·925 |
| Free air in abdomen | 56 (12·5) | 36 (10·8) | 20 (17·4) | 0·252 |
| Free fluid | 90 (20·1) | 61 (18·4) | 29 (25·2) | 0·187 |
| Duration of hospital stay (days)† | 7 (5–13) | 7 (4–10) | 10 (7–18) | < 0·001# |
Values in parentheses are percentages, unless indicated otherwise; values are
*
mean(s.d.) and
†
median (i.q.r.).
‡
Abscess 5 cm or larger in diameter and/or distant abscess. PCD, percutaneous drainage; NSAID, non‐steroidal anti‐inflammatory drug;
§
Pearson χ2 test, except
¶
independent t test,
#
Mann–Whitney U test and
**
Fisher's exact test.