Table 2.
Association between experience of breastfeeding, duration of breastfeeding and joint pain (n = 3454)
| 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 |
Model 1 was adjusted by age
Model 2 was adjusted by age, BMI, household income, smoking, alcohol consumption, physical activity, diabetes, hypertension, children, abortion, menopausal status, hormone replacement therapy
OR odds ratio, 95% CI 95% confidence interval
a p < 0.001, b p < 0.01, c p < 0.05