Asymptomatic gallstones: Outcomes with watchful waiting
| Investigators | No. of patients | Follow-up (months) | Developed biliary colic | Developed complications |
|---|---|---|---|---|
| Gracie et al,41 1982 | 123 | 252 | 18% | 2.4% |
| McSherry et al,42 1985 | 135 | 46 | 10% | _ |
| Wada et al,43 1993 | 680 | 160 | 20% | _ |
| Attili et al,39 1995 | 118 | 120 | 25.8% | 3% |
| Halldestam et al,44 2004 | 120 | 87 | 6.6% | 5% |
| Festi et al,45 2010 | 453 | 104 | 21.9% | _ |
| Shabanzadeh et al,46 2016 | 664 | 209 | 11.6% | 8% |