SHORT REPORT

Excessive infant crying: definitions determine risk groups

S A Reijneveld¹, E Brugman¹, R A Hirasing²

¹ TNO (Netherlands Organisation of Applied Scientific Research) Prevention and Health, Leiden, Netherlands
² VU University Medical Center, Department of Social Medicine, Institute for Research in Extramural Medicine

Correspondence to:
Correspondence to:
Dr S A Reijneveld, Community Physician/Epidemiologist, TNO Prevention and Health, PO Box 2215, 2301 CE Leiden, Netherlands;
SA.Reijneveld{at}pg.tno.nl

We assessed risk groups for excessive infant crying using 10 published definitions, in 3179 children aged 1–6 months (response: 96.5%). Risk groups regarding parental employment, living area, lifestyle, and obstetric history varied by definition. This may explain the existence of conflicting evidence on the occurrence and cause of excessive crying.

Keywords: colic; risk factor; infant; prevalence

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