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Table 1 Descriptive Statistics of the Sample and Description of the Variables used

From: Do mothers accurately identify their child’s overweight/obesity status during early childhood? Evidence from a nationally representative cohort study

Variable Name Variable Description Wave 2 at 3 years old % or Mean (SD) Wave 3 at 5 years old % or Mean (SD)
Child characteristics    
Girl = 1 if child is female; = 0 if male 49.93% 49.87%
Birth weight Child’s birth weight in grams 3514 (523) 3514 (525)
Gestation age Child’s gestation age in weeks 39.57 (1.94) 39.53 (2.01)
Breast fed = 1 if child was breastfed as a baby; =0 if otherwise 60.45% 61.59%
Siblings = 1 if child has siblings; = 0 if otherwise 80.41% 81.66%
Child good health (as self- reported by the mother) = 1 if mother states her child’s health is excellent, very good or good; =0 if otherwise 98.19% 98.52%
Mother characteristics    
Education = Primary/ lower secondary education (reference level) 8.05% 6.28%
= Complete secondary 13.77% 11.27%
= Technical/vocational/non-degree qualification 36.86% 42.08%
= Degree/postgraduate 41.32% 40.38%
Obesity status = 1 if mother is obese (BMI >= 30); = 0 otherwise 17.32% 19.18%
Age Age of mother (this is the age of the mother in continuous years when the baby was 9 months old; the subsequent waves of GUI data only contained categories for mothers’ age) 31.84 (5.16) 32.13 (5.04)
Mother good health (as self- reported by the mother) =1 if mother states her health is excellent, very good or good; =0 if otherwise 93.71% 95.54%
Married = 1 if mother is married or cohabiting; =0 if otherwise 72.87% 75.69%
Working = 1 if mother is working; = 0 if otherwise 57.44% 58.21%
Irish = 1 if mother is Irish; = 0 if otherwise 82.59% 84.34%
Healthcare access and utilisation variables    
Medical card = 1 if child is covered by a medical card; 0 if otherwise 35.60% 39.71%
Private health insurance = 1 if child is covered by private health insurance; 0 if otherwise 54.13% 50.68%
Doctor visits = number of doctor visits by child in the past year 2.43 (2.78) 1.77 (1.94)
Pediatric visits = number of visits by child to pediatrician or hospital consultant in the past year 0.499 (1.16) 0.426 (0.952)
Public health nurse visits = number of public health nurse visits by child in the past year 0.355 (0.647) 0.139 (0.424)
Practice nurse visits = number of practice nurse visits by child in the past year 0.129 (0.519) 0.108 (0.382)
Hospital nights = number of nights spent in hospital by child since previous wave of data collection 0.633 (2.45) 0.277 (0.966)
Hous ehold characteristics    
Equivalised incomea Equivalised household income in quintiles   
  Lowest (base) 19.01% 17.45%
  2nd 18.32% 17.94%
  3rd 19.81% 19.88%
  4th 20.35% 21.35%
  Highest 22.51% 23.38%
Urban = 1 if household in urban area; =0 otherwise 42.72% 38.55%
 Observations   7587 6417
  1. aThe equivalised disposable income is the total income of a household, after tax and other deductions, that is available for spending or saving, divided by the number of household members converted into equalised adults; household members are equalised or made equivalent by weighting each according to their age, using the so-called modified OECD equivalence scale