中国生育密码：南北看文化，东西看钱包

Group 1: Cultural and Economic Differences - The article highlights the cultural differences in China, particularly the North-South contrast in dietary preferences, transportation methods, and personality traits, as well as the East-West economic development disparities [1][2] - The Eastern coastal regions are significantly ahead in economic openness, industrial modernization, urbanization, and international integration compared to the Western inland areas, which face geographical and historical constraints [2] Group 2: Fertility Intentions - The research indicates a clear North-South divide in ideal number of children and an East-West difference in intended number of children, reflecting the influence of cultural and socio-economic factors on demographic behaviors [4][5] - Ideal number of children is measured by asking respondents about their perception of the ideal family size, while intended number of children focuses on individual plans for future childbirth, influenced by economic realities and personal circumstances [6][7] Group 3: Methodology and Findings - The study employs a multilevel regression and post-stratification (MRP) method to estimate county-level fertility intentions, addressing the challenge of data representation at smaller geographic scales [10][11] - The results reveal that the differences in ideal and intended number of children within provinces are comparable to those between provinces, suggesting that key factors affecting fertility intentions operate at more micro geographic or social scales [13]