The analyses adjusted for the effects of age, year of delivery, location of residence (rural vs. urban), income, comorbidity, preexisting hypertension, and gestational hypertension.

• 该分析研究对年龄、生产年份、居住地点（城镇或农村）、收入、合并症、高血压合并妊娠和妊娠高血压的影响进行了校正。