Young maternal age at first birth, especially younger than 20 years, was associated with chronic LBP and combined chronic LBP/UEP, suggesting that this may be a risk factor for chronic LBP in women.

• 讨论：本研究显示：在妇女中，激素和生殖因素例如月经不规律或经期延长或子宫切除术等与慢性LBP和UEP都有联系。