Analysis of individual items in the CMUI scoring system and outcomes of non-surgical treatment
| Parameters | All cases (n: 151) | Success group (n: 120) | Failure group (n: 31) | P value |
| Body weight (kg) | 0.60 | |||
| <12 | 124 (82.1%) | 97 (78.2%) | 27 (21.8%) | |
| >12 | 27 (17.9%) | 23 (85.2%) | 4 (14.8%) | |
| Duration of symptoms (hours) | 0.95 | |||
| <48 | 103 (68.2%) | 82 (79.6%) | 21 (20.4%) | |
| >48 | 48 (31.8%) | 38 (79.2%) | 10 (20.8%) | |
| Vomiting | 0.10 | |||
| Absent | 42 (27.8%) | 37 (88.1%) | 5 (11.9%) | |
| Present | 109 (72.2%) | 83 (76.15%) | 26 (23.9%) | |
| Rectal bleeding | <0.01 | |||
| Absent | 73 (48.3%) | 67 (91.8%) | 6 (8.2%) | |
| Present | 78 (51.7%) | 53 (67.9%) | 25 (32.1%) | |
| Abdominal distension | <0.01 | |||
| Absent | 67 (44.4%) | 61 (91.0%) | 6 (9.0%) | |
| Present | 84 (55.6%) | 59 (70.2%) | 25 (29.8%) | |
| Fever | 0.42 | |||
| Absent | 120 (79.5%) | 97 (80.8%) | 23 (19.2%) | |
| Present | 31 (20.5%) | 23 (74.2%) | 8 (25.8%) | |
| Palpable mass | 0.10 | |||
| Absent | 97 (64.2%) | 81 (83.5%) | 39 (72.2%) | |
| Present | 54 (35.8%) | 39 (72.2%) | 15 (27.8%) | |
| Location of intussusceptum | <0.01 | |||
| Right | 136 (90.1%) | 114 (83.8%) | 22 (16.2%) | |
| Left | 15 (9.9%) | 6 (40.0%) | 9 (60.0%) | |
| Unfavorable ultrasound signs | <0.01 | |||
| Absent | 108 (71.5%) | 98 (90.7%) | 10 (9.3%) | |
| Present | 43 (28.5%) | 22 (51.2%) | 21 (48.8%) | |
| Method of reduction | NA | |||
| Pneumatic reduction | 151 (100%) | 120 (79.5%) | 31 (20.5%) | |
| Hydrostatic reduction | – | – | – |
CMUI, Chiang Mai University Intussusception; NA, not analyzed (the only non-surgical treatment in our institute is pneumatic reduction).