Ostgaard H C, Andersson G B
Department of Orthopaedic Surgery, Sahlgren Hospital, Göteborg, Sweden.
Spine (Phila Pa 1976). 1991 Apr;16(4):432-6. doi: 10.1097/00007632-199104000-00008.
Four hundred twenty-nine pregnant women who had back pain before pregnancy and 375 pregnant women with no previous back pain were followed at regular intervals from the 12th week of pregnancy until delivery; back-pain complaints were recorded. Overall , back pain occurred twice as often in the group with a back-pain history (period prevalence) (P less than 0.001). The point prevalence of back pain in weeks 12, 24, 30, and 36 was three times higher in the group who had had back pain before pregnancy indicating that pain was not only more prevalent but also lasted longer in that group. Women who had been pregnant previously tended to have an increased risk of back pain, and there was a statistically significant correlation between multiparity and longer periods of back pain (P less than 0.001). Young age increased the risk of back pain (P less than 0.001). Pain intensity was higher in the younger women during the first part of their pregnancies but not later on (P less than 0.05).
429名孕前有背痛的孕妇和375名孕前无背痛的孕妇从妊娠第12周开始定期随访直至分娩；记录背痛主诉。总体而言，有背痛病史的组中背痛发生率是另一组的两倍（期间患病率）（P<0.001）。妊娠第12、24、30和36周时，孕前有背痛的组中背痛的时点患病率高出三倍，这表明该组不仅疼痛更普遍，而且持续时间更长。既往有过妊娠的女性背痛风险往往增加，多产与背痛持续时间更长之间存在统计学显著相关性（P<0.001）。年轻增加了背痛风险（P<0.001）。在妊娠早期，年轻女性的疼痛强度较高，但后期则不然（P<0.05）。
