First author Country QS1-150 |
Source of study population Infant's age at assessment Methods of data collection | Definition of infantile colic as used for occurrence estimate | Period of data reporting on occurrence | Eligible (n) | Recruited (n) | Completed study (n) | Occurrence of infantile colic (%) | ||||||||
Canivet29 1-152 | Newborns from hospital | 1 Wessel's criteria1-159 or medication prescribed | 0–3 months | 409 | 209 | 152 | 1 | 5% | |||||||
Sweden | Infants followed from birth to 12 weeks | 2 Wessel's criteria without the 3 weeks criterion | 2 | 11% | |||||||||||
QS=4 | Weekly diary for 1 day, questionnaire (crying a problem?) | 3 Crying/screaming >1 hour/day during 4 days/week in one week | 3 | 17% | |||||||||||
4 Crying is a problem for the mother | 4 | 3% | |||||||||||||
Høgdal32 | Newborns from hospital | Unexplained paroxysms of crying or fussing for at least 90 minutes each day for a minimum of 6 of the preceding 7 days or periods lasting at least 3 hours a day in 3 of the preceding 7 days | 0–6 months | 435 | 365 | 360 | 19% | ||||||||
Denmark | Infants followed from birth to 6 months | ||||||||||||||
QS=4 | Structured telephone interviews at age 1–2–6 months | ||||||||||||||
Rubin35 | Newborns from hospital | Unexplained prolonged crying | 0–3 months | 1269 | 1146 | 1019 | 26% | ||||||||
UK | Infants followed from birth to 1 year | ||||||||||||||
QS=3 | Mothers kept record of any problem on feeding/crying | ||||||||||||||
Michelsson28 | Well baby clinics | Crying with which mothers felt the need to seek help | 0–3 months | nr1-154 | nr | 78 | 5% | ||||||||
Finland | Infants under age 1 year | or | |||||||||||||
QS=2 | Questionnaire and 24-hour diary at arbitrary visit1-151 | Crying for more than 3 hours per day | 14% | ||||||||||||
Rautava37 | Birth register | 5 item scale, ranging from no colic to a lot of colic; colic defined as “a lot of colic” and “quite a lot of colic” | 0–3 months | 1582 | 1443 | 1204 | 28% | ||||||||
Finland | Infants at age 3 months | ||||||||||||||
QS=2 | Questionnaire given at scheduled visit | ||||||||||||||
Rinne41 1-153 | Well baby clinics | Question: how much does the baby cry? | 0–3 months | nr | nr | 113 | 12% | ||||||||
Finland | Infants under age 1 year | Data on infants under 3 months crying more than 3 hours/day are given | |||||||||||||
QS=2 | Questionnaire1-152 | ||||||||||||||
Lehtonen33 | Newborns from hospital | Paroxysms of crying for 3 or more hours per day, 3 days or more per week during at least 3 weeks | 0–3 months | nr | 1221 | 959 | 13% | ||||||||
Finland | Infants followed from birth to 3 months | ||||||||||||||
QS=1 | Questionnaire given at birth to be returned at 3 months | ||||||||||||||
Hide34 | Birth register | Mother's interpretation of the infant's cry as colic | 0–3 months | nr | nr | 843 | 16% | ||||||||
UK | Infants followed from birth to 1 year | ||||||||||||||
QS=1 | Health visitors recorded data at 6–12–26–52 weeks |
↵1-150 QS = quality score: range 0–6 (for details see table 3).
↵1-151 Data on infants younger than 3 months.
↵1-152 Study with prospective and retrospective part; only prospective data in table.
↵1-154 nr = not reported.
↵1-153 Study on Finnish and Colombian infants; only data on Finnish infants in table.
↵1-159 Wessel's criteria: crying for 3 hours or more on at least 3 days in at least 3 weeks.