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.
No takes yet. Share an insight, caveat, or question.
Sijmen A. Reijneveld (2002) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context:
More from Archives of Disease in Childhood