Table 1

Characteristics of studies included

Category 1 (n=75)1-150 Category 2 (n=22)1-151 Category 3 (n=19)
Study design
 Referral centre55118
 Surgical series143
 Surveillance programme362
 Population/inception cohort256
 Private practice1
 Histology series1
Retrospective701112
Referred cancers included
 Yes1011
 Missing data4135
Country
 USA4174
 UK847
 Scandinavia1263
 Other1455
Surgical intervention rate (SD)22% (19.5)24.7% (15.0)25.1% (20.8)
38 studies20 studies12 studies
Pan-proctocolectomy rate (SD)10.7% (20.0)9.1% (8.6)16.4% (19.0)
22 studies7 studies7 studies
  • 1-150 References7 81 94-96 99 101-108 110 113-117 120-122 124 127 128 132 133 135-138 140 142 143 145 148 150 155 157 159 161 163 165 167 170-173 176 177 180–182 185–189 191–205

  • 1-151 References93 98 100 109 112 123 126 134 141 146 147 149 151-154 158 160 162 166 168 169 175

  • References10 97 111 118 119 125 129-131 139 144 156 164 174 178 179 183 184 190