In most situations, simple techniques for handling missing data (such as complete case
analysis, overall mean imputation, and the missing-indicator method) produce biased results, …

Background: Ultrasound therapy is used frequently to reduce pain and related disability,
mainly by physiotherapists. The objective of this review was to evaluate the effectiveness of …

Methods A computer-aided search for published papers was conducted, and the methods of
the studies identified were assessed. Scores were assigned for quality of methods (based …

BACKGROUND AND OBJECTIVES: To illustrate the effects of different methods for handling
missing data—complete case analysis, missing-indicator method, single imputation of …

Background Recently reported risks of colorectal cancer (CRC) in inflammatory bowel
disease (IBD) have been lower than those reported before 2000. The aim of this meta-analysis …

This paper provides an up-to-date overview of the occurrence, diagnosis, risk factors, prognostic
indicators and outcome of shoulder disorder (SD), and of the validity and reproducibility …

Shoulder complaints are common and have an unfavourable outcome in many patients. Only
50% of all new episodes of shoulder disorders end in complete recovery within 6 months. …

Objective To compare the effect of enteral vs parenteral nutrition in patients with severe
acute pancreatitis for clinically relevant outcomes. Data Sources A computerized literature …

BACKGROUND: Most randomized controlled trials (RCTs) and meta-analyses of RCTs examine
effect modification (also called a subgroup effect or interaction), in which the effect of an …

Background The treatment of non-specific chronic low back pain is often based on three
different models regarding the development and maintenance of pain and especially functional …