Table 1.

Baseline characteristics of five randomised trials on follow up after curative resection for colorectal cancer

No of patientsMean (SD*) age (years)Men/womenColon/rectumDukes' stage (A/B/C)
StudyIntensiveControlIntensiveControlIntensiveControlIntensiveControlIntensiveControl
Extramural detection trials
Makela et al, 199517525463 (9)69 (8)25/2727/2736/1639/1513/24/1515/24/15
Ohlsson et al, 199518535466 (9)66 (9)20/3331/2334/19371710/21/229/26/19
Schoemaker et al, 19981916715867 (9)69 (7)109/5898/60121/46117/4141/79/4730/74/54
Pietra et al, 19982010410362 (12)64 (9)56/4653/5073/3166/370/62/420/60/43
Intramural detection trial
Kjeldsen et al, 19972129030764 (6)64 (6)168/122158/149156/134158/14968/148/7470/145/92
  • *SD estimated from stated ranges.