Tools
22 entriesClinical calculators and scoring systems
- ORBIT Bleeding Risk Score in Atrial Fibrillation (AF)Estimates risk for major bleeding (fatal bleeding/bleeding with Hb drop requiring blood transfusion of ≥2 units/symptomatic bleeding in a critical organ) in adults with AF in whom anticoagulation is being considered for stroke prevention→
- Odds Ratio (OR) and Relative Risk (RR)Calculates the ratio of the risk of an event in 1 group vs the risk of the event in another group (RR); and the ratio of odds of an event in 1 group vs the odds of the event in another group (OR)→
- Odds from ProbabilityConverts from a probability to odds→
- Oesophageal Varices: Prediction from Platelet Count to Spleen Diameter RatioPredicts the presence of oesophageal varices in patients with chronic liver disease or portal vein thrombosis→
- Omeprazole Therapeutic Gain in DyspepsiaPredicts which patients with dyspepsia will benefit from omeprazole treatment→
- Osteoporosis Risk Assessment Index (ORAI)Predicts risk of osteoporosis and helps select women for bone densitometry→
- Osteoporosis Risk Assessment by Composite Linear Estimate (ORACLE) ScorePredicts the risk of osteoporosis based on patient risk factors and ultrasonometric features→
- Osteoporosis Risk SCORE (Simple Calculated Osteoporosis Risk Estimation)Identifies postmenopausal women who are likely to have low bone density→
- Oswestry Disability Index (ODI)Measures functional status and degree of disability and impairment to daily activities in patients with chronic low back pain→
- Ottawa Ankle RuleRules out clinically significant ankle fractures in patients ≥2 years of age presenting with acute ankle injuries, to aid efficient use of X-rays→
- Ottawa Foot Rule for the Use of X-Ray in Foot InjuryRules out clinically significant foot fractures in patients ≥2 years of age presenting with acute midfoot injuries, to aid efficient use of X-rays→
- Ottawa Heart Failure Risk Scale (OHFRS)Identifies patients presenting to the ED with acute HF or exacerbation of chronic HF at risk for serious adverse events (MI, death, need for intubation/ICU admission)→
- Ottawa Knee RuleRules out clinically significant fractures in patients ≥2 years of age presenting with knee trauma, to aid efficient use of X-rays→
- Ottawa Subarachnoid Haemorrhage (SAH) RuleRules out SAH in patients ≥15 years of age who are neurologically intact, presenting to the ED with new, severe, non-traumatic headache reaching maximum intensity within 1 hour→
- Overall Accuracy of a Test from Raw DataCalculates the probability that an individual will be correctly classified by a test→
- Overall Accuracy of a Test from Sensitivity, Specificity and PrevalenceCalculates the probability that an individual will be correctly classified by a test using prevalence, sensitivity and specificity of the test→
- Oxygen (O₂) Content of Arterial BloodCalculates the oxygen content in arterial blood by adding the oxygen that is combined with Hb and the oxygen dissolved in the plasma→
- Oxygen (O₂) Content of Venous BloodCalculates the oxygen content in venous blood by adding the oxygen that is combined with Hb and the oxygen dissolved in the plasma→
- Oxygen (O₂) Delivery Units ConversionConverts between different units of oxygen delivery→
- Oxygen Consumption (VO₂)Calculates VO₂→
- Oxygen Saturation (SpO₂) Estimate from PO₂Estimates oxygen saturation from the partial pressure of oxygen→
- Oxygenation Index (OI)Predicts outcomes in patients with ALI and ARDS; and assesses the intensity of ventilatory support required or potential ECMO in neonates and paediatrics→