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Table 1 Characteristics of the mothers according to breastfeeding status concerning their youngest child: The NutriNet-Santé Study

From: Trends in breastfeeding practices and mothers’ experience in the French NutriNet-Santé cohort

Characteristics of the women

Total population

Breastfed

Did not breastfeed

P

N

29,953

20,153

9800

 

Age in years

53.0 (52.8–53.1)

51.3 (51.2–51.5)

56.4 (56.2–56.6)

0.001

Age during the latest pregnancy

30.0 (29.9–30.0)

30.4 (30.3–30.5)

29.1 (29.0–29.2)

0.001

Body mass index, kg/m2

23.8 (23.7–23.8)

23.6 (23.5–23.6)

24.2 (24.1–24.3)

0.001

Age categories, %

0.001

  < 40 years

19.3

23.3

11.0

 

 40–49.9 years

19.9

21.1

17.4

 

 50–59.9 years

27.1

27.0

27.1

 

 60 + years

33.8

28.6

44.5

 

Educational level, %

0.001

  < high school degree

21.4

15.8

32.9

 

  < 2y after high school degree

15.9

14.0

19.9

 

  ≥ 2y after high school degree

62.7

70.2

47.2

 

Marital status, %

0.001

 Single

3.0

3.2

1.6

 

 Married

81.4

81.4

80.8

 

 Divorced

11.9

12.0

11.7

 

 Widowed

3.7

3.4

5.9

 

Smoking status, %

0.001

 Never smokers

51.3

51.6

50.7

 

 Former smokers

36.6

37.4

36.8

 

 Current smokers

13.1

11.0

12.5

 

Childbirth order, %

0.001

 1st child

24.4

24.1

24.6

 

 2nd child

47.0

46.0

49.8

 

 3rd child or more

28.6

29.8

25.6

 

Decade of childbirth, %

0.001

  < 1970

6.1

4.4

9.6

 

 1970–1979

19.6

15.9

27.3

 

 1980–1989

24.4

24.1

24.9

 

 1990–1999

19.7

19.8

19.5

 

 2000–2009

18.7

21.8

12.4

 

 2010–2016

11.5

14.0

6.3

 

Area of residencea, %

0.001

 Parisian region

18.7

19.1

18.0

 

 Paris Basin

14.8

13.4

15.6

 

 North

3.9

3.8

4.1

 

 East

8.0

8.6

6.7

 

 West

15.5

14.7

17.2

 

 South-West

11.6

11.2

12.3

 

 Center-East

14.8

15.6

13.2

 

 Mediterranean

12.7

12.6

12.9

 

 Overseas Regions and Departments

0.01

0.02

0.00

 
  1. aResearch and National Development Zones (ZEAT in French): Parisian region (Île-de-France), Paris Basin (Basse-Normandie, Bourgogne, Centre-Val de Loire, Champagne-Ardenne, Basse, Haute-Normandie et Picardie), North (Hauts-de-France), East (Alsace, Franche-Comté, Lorraine), West (Bretagne, Pays de la Loire, Poitou-Charentes), South-West (Aquitaine, Limousin, Midi-Pyrénées), Center-East (Auvergne, Rhône-Alpes), Mediterranean (Languedoc-Roussillon, Provence-Alpes-Côte d’Azur, Corse), Overseas Regions and Departments (Guadeloupe, Guyane, Martinique, Mayotte, La Réunion). https://www.insee.fr/fr/metadonnees/definition/c1910
  2. Childbirth order is the birth order of the mothers’ last child
  3. Data are mean (95% confidence intervals computed using the standard error of the mean) for continuous variables and percentages for categorical variables
  4. P values are linear trends for quantitative variables and chi square for qualitative variables