怎样做分层回归分析，哪本书有详细介绍

    有谁知道分层回归分析SPSS具体操作步骤吗，是否能用温忠麟的中介效应检验来做呢，哪本书上有详细的介绍分层回归分析呢

By correlation analysis, the intervention group after the intervention of anxiety and depression scores and total sleep quality and sleep quality, sleep time, sleep time, sleep disturbance, day functions between various components had significant positive correlation. After the intervention in anxiety and depression scores as independent variables, sleep quality score as the dependent variable, stratified and stepwise regression analysis, results showed that sleep quality and depression explained 41.3% variability and anxiety can explain variation in sleep quality stem 32.7%.