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Table 4 Association between experience of breastfeeding, duration of breastfeeding and joint pain, above 60 years (n = 2102)

From: Relationship of breastfeeding duration with joint pain and knee osteoarthritis in middle-aged Korean women: a cross-sectional study using the Korea National Health and Nutrition Examination Survey

Factors

Unadjusted

Model 2

OR (95% CI)

OR (95% CI)

Breastfeeding experience (dichotomized)

 Non-breastfeed

1

1

 Breastfeed ≥1 mth

1.91 (1.23, 2.96)b

2.61 (1.42, 4.82)b

Breastfeeding duration (categorized)

 None

1

1

 1–24 mths

1.28 (0.77, 2.11)

2.39 (1.23, 4.64)c

 25–48 mths

1.53 (0.94, 2.48)

2.35 (1.25, 4.41)b

 ≥ 49 mths

2.33 (1.58, 3.63)a

3.07 (1.63, 5.79)b

 p for trend

<.001

0.005

  1. Model 2 was adjusted by BMI, household income, smoking, alcohol consumption, physical activity, diabetes, hypertension, children, abortion, hormone replacement therapy. (In reselection of subjects aged over 60 years, since all the subjects were in menopause stage, the variables of age and menopausal status were removed from the confounders)
  2. OR odds ratio, 95% CI 95% confidence interval
  3. a p < 0.001, b p < 0.01, c p < 0.05