[Summary of the NHG guideline 'Abdominal pain in children', the 100th NHG guideline].

The Dutch College of General Practitioners (NHG) guideline 'Abdominal pain in children' was published in September 2012. The guideline distinguishes between children with acute abdominal pain (≤ 1 week) and chronic abdominal pain (> 1 week). Abdominal pain can be caused by an underlying somatic condition or can have a functional nature.

The course of mental health problems in children presenting with abdominal pain in general practice.

Objective: To investigate the course of mental health problems in children presenting to general practice with abdominal pain and to evaluate the extent to which abdominal pain characteristics during follow-up predict the presence of mental health problems at 12 months' follow-up.

Design: A prospective cohort study with one-year follow-up.

Setting: 53 general practices in the Netherlands, between May 2004 and March 2006.

Childhood nonspecific abdominal pain in family practice: incidence, associated factors, and management.

Purpose: Nonspecific abdominal pain (NSAP) is a common complaint in childhood. In specialist care, childhood NSAP is considered to be a complex and time-consuming problem, and parents are hard to reassure. Little is known about NSAP in family practice, but the impression is that family physicians consider it to be a benign syndrome needing little more than reassurance.

Prognostic factors for persistence of chronic abdominal pain in children.

Objectives: The aim of the study was to identify prognostic factors for the persistence of chronic abdominal pain (CAP) in children.

Materials And Methods: For this systematic review, MEDLINE, EMBASE, and PsycINFO were searched up to June 2008 for prospective follow-up studies of pediatric CAP as defined by the criteria of Apley, von Baeyer, or the Rome committee. The outcome measure of interest was persistence of CAP.

Prognosis of chronic or recurrent abdominal pain in children.

Background: Chronic abdominal pain (CAP) or recurrent abdominal pain is common in childhood and is rarely associated with organic disease. With modern diagnostic technology, new organic abnormalities are found in children with CAP. Thus far a causal relation between these abnormalities and CAP has not been established.

Effect of personality dimensions on the diurnal pattern of motor activity.

The effects of personality dimensions, age, and gender on 24-hour motor activity patterns were studied in 101 healthy subjects between 20-70 years. We measured motor activity by wrist-actigraphy and personality dimensions by the Tridimensional Personality Questionnaire (TPQ) of Cloninger. Random Regression Models were used to estimate the effects of personality dimensions, age, and gender on the diurnal pattern of motor activity.