METHODS: Random sample questionnaire survey was conducted among consumers in Baoding city and its surrounding counties, and the data were subjected tot-test, analysis of variance, and LSD-t test.

方法：对保定市及周边县城消费者进行随机抽样问卷调查，采用t检验、方差分析和LSD - t检验等方法对调查数据进行统计学处理。

youdao

Manson also had a history of using drugs such as LSD, amphetamines and barbiturates, but he hasn't participated in any self-help programs for the last 11 years, Robles said.

CNN: STORY HIGHLIGHTS