The validity of self-reported cancer in a population-based cohort compared to that in formally registered sources.

Background: Self-reported cancer has been validated with heterogeneous results across populations. The aim was to assess the validity of self-reported cancer in the Lifelines population-based cohort and to search for explanations for not reporting cancer.

Methods: Data from adult participants (n = 152,780) from Lifelines was linked to the Dutch-Nationwide pathology databank (PALGA), which has nearly 100% coverage of cancer diagnoses in the Netherlands and is considered as the gold standard for ascertainment of cancer diagnosis in this study.

[Diagnosing and treating sleep for the general practitioner].

Sleep disorders are prevalent and have large impact on well-being and functioning. Based on the presenting symptoms, the general practitioner can often diagnose and treat uncomplicated sleep disorders. An overview of the most common sleeping complaints, underlying diagnoses and useful treatments is given.

Sooty mangabeys scavenge on nuts cracked by chimpanzees and red river hogs-An investigation of inter-specific interactions around tropical nut trees.

Carrion scavenging is a well-studied phenomenon, but virtually nothing is known about scavenging on plant material, especially on remnants of cracked nuts. Just like meat, the insides of hard-shelled nuts are high in energetic value, and both foods are difficult to acquire. In the Taï forest, chimpanzees (Pan troglodytes) and red river hogs (Potamochoerus porcus) crack nuts by using tools or strong jaws, respectively.

Prospective, observational study comparing automated and visual point-of-care urinalysis in general practice.

Objective: Point-of-care testing (POCT) urinalysis might reduce errors in (subjective) reading, registration and communication of test results, and might also improve diagnostic outcome and optimise patient management. Evidence is lacking. In the present study, we have studied the analytical performance of automated urinalysis and visual urinalysis compared with a reference standard in routine general practice.

[Unambiguous practice guidelines on urinary tract infections in primary and secondary care].

The Dutch College of General Practitioners (NHG) practice guideline 'Urinary tract infections' intended for primary health care and the Dutch Working Party on Antibiotic Policy (SWAB) practice guideline 'Antimicrobial therapy in complicated urinary tract infections' intended for specialists in secondary care, were reviewed together. - In the NHG guideline the differentiation between 'complicated' and 'uncomplicated' urinary tract infections has been replaced by categorisation into age, sex, risk group and the presence of fever, or invasion of tissues.- If urinary tract infection has been diagnosed, a dip slide test can be used to determine resistance.