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Table 2 Association between experience of breastfeeding, duration of breastfeeding and joint pain (n = 3454)

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 1

Model 2

OR (95% CI)

OR (95% CI)

OR (95% CI)

Breastfeeding experience (dichotomized)

 Non-breastfeed

1

1

1

 Breastfeed ≥1 mth

2.26 (1.68, 3.02)a

1.59 (1.18, 2.16)b

1.49 (1.01, 2.21)c

Breastfeeding duration (categorized)

 None

1

1

1

 1–24 mths

1.20 (0.87, 1.66)

1.29 (0.93, 1.79)

1.34 (0.89, 2.00)

 25–48 mths

2.13 (1.51, 3.01)a

1.75 (1.23, 2.49)b

1.67 (1.07, 2.61)b

  ≥ 49 mths

4.10 (3.08, 5.46)a

2.08 (1.53, 2.83)a

1.97 (1.29, 3.02)b

 p for trend

<.001

<.001

0.002

  1. Model 1 was adjusted by age
  2. Model 2 was adjusted by age, BMI, household income, smoking, alcohol consumption, physical activity, diabetes, hypertension, children, abortion, menopausal status, hormone replacement therapy
  3. OR odds ratio, 95% CI 95% confidence interval
  4. a p < 0.001, b p < 0.01, c p < 0.05