Eur J Obstet Gynecol Reprod Biol 2015 191:10-4. SR Risk Calculator can be accessed here: SR Risk Calculator References The parameters used in the Simple Rules risk calculation are based on the terms and definitions as published by the IOTA group.14 The Simple Rules risk calculation cannot replace training and experience in ultrasonography and cannot compensate for poor quality ultrasound equipment. The manuscript describing the SRrisk model is published in American Journal of Obstetrics and Gynecology (Timmerman, Van Calster, et al, 2016).15 As a consequence the Simple Rules risk calculation cannot be applied to conservatively treated adnexal tumors.
patients selected for expectant management were excluded when creating the model. IOTA models, RMI, ROMA) have been created for patients undergoing surgery, i.e. All current diagnostic models for adnexal tumors (e.g. All patients included required surgery as judged by a local clinician. The model was developed by clinicians and statisticians from the International Ovarian Tumor Analysis (IOTA) group, and is based on clinical and ultrasound data from almost 6000 women recruited at 24 center in 10 countries (Italy, Belgium, Sweden, Czech Republic, Poland, France, UK, China, Spain, and Canada). Oncology centers were defined as tertiary referral centers with a specific gynecological oncology unit. This is based on a logistic regression model with the ten features and the type of center (oncology center vs other) as predictors. This was overcome by the development of the SRrisk calculation tool15. The Simple Rules have the important drawback that they do not give a predicted risk, and hence not a level of confidence in the classification. The Simple Rules risk (SRrisk) calculation (2016)
App for iPhone (updated for the most recent Apple version)īy installing this software you agree to the terms of the License Agreement.The original SR is implemented electronically in various formats: The parameters used in the Simple Rules are based on the terms and definitions as published by the IOTA group.14 The Simple Rules cannot replace training and experience in ultrasonography and cannot compensate for poor quality ultrasound equipment.
The manuscript describing the Simple Rules is published in Ultrasound in Obstetrics and Gynecology (Timmerman et al, 2008).1The Simple Rules have been successfully validated in several studies.2-13 The Simple Rules were developed by clinicians and statisticians from the International Ovarian Tumor Analysis (IOTA) group, based on clinical and ultrasound data from 1066 women recruited at 9 centers in 5 countries (Italy, Belgium, Sweden, France, and UK). Inconclusive - no features apply, or both B- and M-features applyįigure 1.Based on which of the B- and M-features that apply, tumors are classified as Benign, Malignant or Inconclusive: The Simple Rules can be used to diagnose ovarian cancer in women who have at least one persistent adnexal (ovarian, para-ovarian, and tubal) tumor and are considered to require surgery. The Simple Rules are a preoperative classification system for ovarian tumors, consisting of five features typical for benign tumors (B-features) and five features typical for malignant tumors (M-features), see Figure 1.