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. 2025 Jun 28;15(7):885. doi: 10.3390/bs15070885

Table 3.

Multilevel binary logistic regression model of shadow education duration (using appropriate education as the reference category).

M5 M6 M7 M8
Variables Insufficient Education Excessive Education Insufficient Education Excessive Education
Control variable YES YES YES YES
Family income 0.496 *** 0.774 *** 0.502 *** 0.785 ***
(0.024) (0.063) (0.025) (0.066)
Before 2018 (base group)
2020 0.648 *** 1.935 ***
(0.057) (0.335)
2022 0.766 *** 0.628 **
(0.067) (0.126)
Constant 19,344.301 *** 0.476 12,299.165 *** 0.464
(13,851.352) (0.669) (8946.199) (0.671)
ICC of family level 0.564 0.492 0.573 0.526
ICC of community level 0.101 0.466 0.120 0.526
Observations 7439 2424 7439 2424

Notes: 1. Coefficients represent odds ratios; standard errors in parentheses 2. *** p < 0.01, ** p < 0.05.