BACKGROUND To investigate the average and extrapolated excess length of stay and direct costs of adverse events (AEs) and preventable AEs in Dutch hospitals, and to evaluate patient characteristics associated with excess length of stay and costs. METHODS Data of a large retrospective patient record review study on AEs was used. A stratified sample of 20 Dutch hospitals was included. Excess le...

Adverse events (AEs) occur in health care and may result in harm to patients especially in the field of surgery. Our objective was to analyze AEs in surgical patient care from a nationwide perspective and to analyze the frequency of AEs that may be preventable. In total 19,141 randomly selected admissions in 63 Swedish hospitals were reviewed each month during 2013 using a 2-stage record review...

AES is the best known and most widely used block cipher. Its three versions (AES128, AES-192, and AES-256) differ in their key sizes (128 bits, 192 bits and 256 bits) and in their number of rounds (10, 12, and 14, respectively). In the case of AES-128, there is no known attack which is faster than the 2 complexity of exhaustive search. However, AES-192 and AES-256 were recently shown to be brea...

S-box is a unique nonlinear operation in Rijndael, one encryption algorithm chosen as AES, and it determines the performance of AES. In this paper, the weaknesses in complexity and security of AES S-box are analyzed. We propose to increase the complexity and security of AES S-box by modifying the affine transformation and adding an affine transformation. Performance analysis demonstrates that t...

Objectives: Using an exercise intervention to improve lumbopelvic control (LPC) can enhance the pain severity and disability of participants with non-specific low back pain (NSLBP). The present study aimed to compare dynamic neuromuscular stabilization (DNS) exercises and common aquatic exercises (AEs) in terms of improving the pain, disability, LPC, and spinal posture of patients with non-spec...

OBJECTIVE To determine the incidence and incidence density of adverse events (AEs) in Spanish hospitals (including the pre-hospitalisation period). METHOD Retrospective cohort study. RESULTS The incidence of patients with AEs relating directly to hospital care was 8.4% (95% CI 7.7% to 9.1%) and rose 9.3% (95% CI 8.6% to 10.1%), including those from the pre-hospitalisation period. The incide...

OBJECTIVE The objective of this study was to analyze the variation in the rates of adverse events (AEs), and preventable AEs, between hospitals and hospital departments in order to investigate the room for improvement in reducing AEs at both levels. In addition, we explored the extent to which patient, department and hospital characteristics explain differences in the rates of AEs. DESIGN Str...