Dealing with missing data in the Center for Epidemiologic Studies Depression self-report scale: a study based on the French E3N cohort

Table 3 Score on the CES-D scale and prevalence of high depressive symptoms according to various methods of handling missing values assuming ignorable missing data

				Score on the CES-D scale
		N	Mean	SD	SEM	≥16 (%)
Complete cases		39,393	11.89	8.20	0.04	26.09
Classifiable cases		55,964	-	-		30.36
Single imputation - Minimum value
	0 - 20 MV	71,412	11.02	8.28	0.03	23.79
	0 - 10 MV	62,053	12.10	8.20	0.03	27.06
	0 - 4 MV	59,562	12.07	8.22	0.03	26.91
Single imputation - Maximum value
	0 - 20 MV	71,412	19.68	16.15	0.06	45.42
	0 - 10 MV	62,053	14.53	9.62	0.04	37.19
	0 - 4 MV	59,562	13.71	8.74	0.04	34.58
Single imputation - Person mean
	0 - 19 MV	69,242	13.81	10.16	0.04	33.16
	0 - 10 MV	62,053	12.76	8.82	0.04	28.99
	0 - 4 MV	59,562	12.45	8.52	0.03	27.78
Multiple imputation
Score
	0 - 20 MV	71,412	12.23	8.37	0.04	27.58
	0 - 10 MV	62,053	12.12	8.33	0.04	27.10
	0 - 4 MV	59,562	12.06	8.29	0.05	26.81
Status ≥ 16
	0 - 20 MV	71,412	-	-		31.04
	0 - 10 MV	62,053	-	-		30.33
	0 - 4 MV	59,562	-	-		29.27
Multiple imputation
Items
Parsimonious model
pmm method
	0 - 20 MV	71,412	13.30	9.02	0.04	31.99
	0 - 10 MV	62,053	12.76	8.71	0.04	29.75
	0 - 4 MV	59,562	12.48	8.47	0.03	28.62
polyreg method
	0 - 20 MV	71,412	13.18	9.05	0.04	31.54
	0 - 10 MV	62,053	12.76	8.72	0.04	29.75
	0 - 4 MV	59,562	12.47	8.48	0.03	28.61
Full model
pmm method
	0 - 20 MV	71,412	13.26	9.04	0.03	31.85
	0 - 10 MV	62,053	12.76	8.72	0.04	29.74
	0 - 4 MV	59,562	12.48	8.48	0.03	28.63
polyreg method
	0 - 20 MV	71,412	13.22	9.05	0.04	31.73
	0 - 10 MV	62,053	12.76	8.72	0.04	29.80
	0 - 4 MV	59,562	12.48	8.48	0.03	28.63

ISSN: 1471-2288