Little is known about the relationship between socioeconomic position (SEP) and duration and patterning of objectively measured sedentary time (ST) among adults, especially adults at high risk of diabetes. The aim of this study was to examine cross-sectional associations of SEP with ST (total, prolonged ST, breaks in ST) and self-reported TV time among pregnant women at risk of gestational diabetes in the UK. At 20 weeks’ gestation, pregnant women (n=174) wore an activPAL accelerometer and reported their usual TV time. Generalized linear mixed models were used to test associations of education, household income and area-level deprivation (separately and with mutual adjustment) with total ST, prolonged ST and breaks in ST. Logistic regression models were used to test associations between SEP indicators and high (≥2h/day) TV time. Those with the lowest education, lowest household income and highest area-level deprivation had the lowest ST and lowest prolonged ST. After mutual adjustment, area-level deprivation remained associated with total ST (β=0.10 [0.01, 0.20]). There was an inverse association between area-level deprivation and breaks in sedentary time (exp(b)=1.11 [1.01, 1.22]). Education was the only SEP correlate of high TV time, with more of those with least education reporting high TV time; this association persisted after adjustment for household income and area-level deprivation. The association between SEP and total and prolonged ST (positive) was the opposite of the association between education and high TV time (negative) in this sample of high-risk pregnant women. These findings should inform interventions to reduce sedentary time.

关于社会经济地位 (SEP) 与成年人，尤其是糖尿病高风险成年人中客观测量的久坐时间 (ST) 的持续时间和模式之间的关系知之甚少。本研究的目的是在英国有妊娠糖尿病风险的孕妇中检查 SEP 与 ST（总、延长 ST、ST 中断）和自我报告的电视时间的横断面关联。妊娠 20 周时，孕妇 ( n=174) 佩戴 activPAL 加速度计并报告他们通常的电视时间。广义线性混合模型用于测试教育、家庭收入和地区水平剥夺（单独和相互调整）与总 ST、延长 ST 和 ST 中断的关联。逻辑回归模型用于测试 SEP 指标与高（≥2 小时/天）电视时间之间的关联。受教育程度最低、家庭收入最低和地区贫困程度最高的人的 ST 最低，延长 ST 最低。相互调整后，区域级剥夺仍然与总 ST 相关（β = 0.10 [0.01, 0.20]）。区域水平的剥夺与久坐时间的休息之间存在负相关（exp（b)=1.11 [1.01, 1.22])。教育是高电视时间的唯一 SEP 相关因素，更多受教育程度最低的人报告高电视时间；在对家庭收入和地区贫困进行调整后，这种关联仍然存在。在该高危孕妇样本中，SEP 与总 ST 和延长 ST（阳性）之间的关联与教育与高 TV 时间（阴性）之间的关联相反。这些发现应为减少久坐时间的干预措施提供信息。