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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.

ABSTRACT: BACKGROUND:The effect of joint health on the quality of life of middle-aged and older women is becoming more widely recognized with the aging of the world's population. However, the association of long-term breastfeeding with joint pain and knee osteoarthritis has not been fully examined. The aim of this study was to determine the association of prior breastfeeding duration with current joint pain and knee osteoarthritis in middle-aged Korean women. METHODS:This cross-sectional study was conducted among 3454 women aged ?50?years who underwent knee radiography and answered a questionnaire on breastfeeding and joint pain for the 5th Korea National Health and Nutrition Examination Survey (2010-2011). After adjusting for confounding sociodemographic, medical history, and obstetric and gynecologic variables, logistic regression analysis was conducted to analyze the prevalence of joint pain and knee osteoarthritis according to breastfeeding and its duration. RESULTS:Among the 3454 participants, 298 had not breastfed and 1042, 815, and 1299 had breastfed for 1-24, 25-48, and???49?months, respectively. Of all participants, 1731 had joint pain and 739 were diagnosed with knee osteoarthritis after radiography. Using the non-breastfeeding group as a reference, the odds ratio (OR) for joint pain among women who breastfed ?1?month was 1.49 (95% confidence interval [CI] 1.01-2.21). As the breastfeeding duration increased, the OR of joint pain prevalence also increased (p for trend; p?=?0.002). For knee osteoarthritis, the OR was 2.30 in the 25-48?months group (95% CI 1.09-4.86). The OR of knee osteoarthritis in the ?49?months group was 2.17 (95% CI 1.01-4.64). Sensitivity analysis after selecting only participants aged ?60?years showed that the prevalence of joint pain and knee osteoarthritis was more positively correlated with extended breastfeeding duration (joint pain, p for trend; p?=?0.005) (knee osteoarthritis, p for trend; p?=?0.012). CONCLUSIONS:Long-term feeding for more than 25?months was associated with an increased prevalence of joint pain and degenerative arthritis in Korean women aged ?50?years.

SUBMITTER: Kim MY

PROVIDER: S-EPMC7517693 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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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.

Kim Min-Young MY Kim Hyun-Joong HJ Noh Je-Heon JH Kim Sun-A SA Hwang Deok-Sang DS Lee Chang-Hoon CH Ha In-Hyuk IH

BMC women's health 20200924 1

<h4>Background</h4>The effect of joint health on the quality of life of middle-aged and older women is becoming more widely recognized with the aging of the world's population. However, the association of long-term breastfeeding with joint pain and knee osteoarthritis has not been fully examined. The aim of this study was to determine the association of prior breastfeeding duration with current joint pain and knee osteoarthritis in middle-aged Korean women.<h4>Methods</h4>This cross-sectional st ...[more]

PMID: 32972416

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Project description:BACKGROUND:To reduce the social burden of knee osteoarthritis (OA) by addressing it in the early stages in the population at greatest risk, the epidemiology of knee OA needs to be understood and associated demographic factors need to be identified. OBJECTIVES:We evaluated the weighted prevalence of and demographic factors associated with radiographic knee OA in Korean adults. METHODS:We analyzed data from 12,287 individuals aged ? 50 years who had radiographs of the knee taken in the 2010-2013 Korea National Health and Nutrition Examination Survey (KNHANES). Radiographic knee OA was defined based on the Kellgren-Lawrence grade, as follows: 0: No abnormal finding 1: Mild degenerative changes, minute osteophytes 2: Mild knee OA, definite osteophytes 3: Moderate knee OA, moderate joint-space narrowing and definite osteophytes 4: Severe knee OA, severe joint-space narrowing with subchondral sclerosis. RESULTS:We found that the prevalence of radiographic knee OA in the Korean adult population was 35.1%. Logistic regression analyses were performed to identify factors associated independently with radiographic knee OA, with age, sex, area of residence, education level, household income, and obesity serving as covariates. Women were at greater risk than men of having knee OA (OR 2.12, 95% CI 1.90-2.37, p < 0.001). Compared with subjects aged 50-59 years, adults aged ? 80 years were at 8.87-fold (95% CI 7.12-11.06, p < 0.001) greater risk of having knee OA. Residence in a rural area was associated with a greater risk of having radiographic knee OA than was residence in an urban area (OR 1.26, 95% CI 1.08-1.48, p = 0.004), regardless of knee OA severity (Kellgren-Lawrence grades ?2, ?3, and 4). Elementary school graduates had 1.71-fold (p < 0.001) greater risks of having knee OA than did college graduates. Household incomes ?24th percentile were associated with a greater risk of having knee OA compared with those ?75th percentile (OR 1.28, 95% CI 1.08-1.52, p = 0.004). Obesity was associated with an approximately two-fold greater risk of knee OA, regardless of knee OA severity (Kellgren-Lawrence grades ?2, ?3, and 4). CONCLUSIONS:Using data from the 2010-2013 KNHANES and defining knee OA as Kellgren-Lawrence grade ? 2, we found that the prevalence of radiographic knee OA was 35.1% (24.4% in men, 44.3% in women) in a representative sample of Korean adults aged ? 50 years, with the highest prevalence (78.7%) observed in women aged ? 80 years. Low socioeconomic status and traditional factors, including age, female sex, and obesity, were associated with the risk of knee OA.

Dataset Information

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.

Publications

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.

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