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Table 3 Results of subgroup analysis by proportion of private education cost to CESD scores according to EHDI

From: Correlation between private education costs and parental depression in South Korea

VariablesProportion of private education costa
Tertile 1 (~16.3%/~17.5%)Tertile 2 (16.3~29.4%/17.5~29.0%)Tertile 3 (29.4%~/29.0%~)
ββSE95% CIp-valueβSE95% CIp-value
  Tertile 1 (~198.0)Ref.1.1720.3650.457~1.887.00131.4370.3130.823~2.051<.0001
  Tertile 2 (198.0~278.5)Ref.-0.0700.235-0.532~0.391.76500.0130.210-0.398~0.424.9492
  Tertile 3 (278.5~)Ref.0.3520.216-0.071~0.776.1032-0.1320.295-0.711~0.446.6535
  Tertile 1 (~202.4)Ref.-0.2590.355-0.956~0.437.4654-0.1500.340-0.817~0.517.6593
  Tertile 2 (202.4~283.3)Ref.-0.236...-0.134...
  Tertile 3 (283.3~)Ref.-0.3030.319-0.928~0.322.3416-0.1690.333-0.821~0.483.6120
  1. Abbreviations: CESD (The Center for Epidemiologic Studies Depression Scale), EHDI (Equivalized Household Disposable Income), AUDIT (Alcohol Usage Disorder Identification Test), RSS (Rosenberg Self-Esteem Scale), GPA (Grade Point Average), K-CBCL (Korean Child Behavior Checklist)
  2. 1Proportion of private education cost is defined as: (private education cost/equivalized household disposable income)*100
  3. 2The unit of EHDI is 10,000 which is about $8.83 at 2015
  4. Value in the parentheses is the actual data range