Comparison of generalized estimating equations and quadratic inference functions using data from the National Longitudinal Survey of Children and Youth (NLSCY) database

Table 6 Adjusted odds ratios for hyperactivity-inattention using AR(1) and exchangeable working correlation structures in QIF

	AR(1)		Exchangeable
Parameter	OR (95% CI)	p-value	OR (95% CI)	p-value
Intercept	0.03 (0.01 to 0.15)	<0.0001	0.02 (0.01 to 0.08)	<0.0001
Cycle (t)	3.42 (1.00 to 11.61)	0.0486	2.97 (0.91 to 9.67)	0.0704
Cycle ² (t ² )	0.74 (0.64 to 0.86)	<0.0001	0.71 (0.61 to 0.82)	<0.0001
Age (yr)	0.96 (0.58 to 1.59)	0.8670	1.13 (0.72 to 1.77)	0.6054
Gender (Male)	1.73 (1.10 to 2.71)	0.0167	1.83 (1.19 to 2.80)	0.0056
Family functioning	2.84 (1.58 to 5.11)	0.0005	2.31 (1.27 to 4.21)	0.0061
Maternal depression	2.49 (1.60 to 2.60)	0.0001	2.09 (1.27 to 3.46)	0.0038
Maternal immigration status	0.69 (0.35 to 1.37)	0.2937	0.58 (0.29 to 1.15)	0.1186
Income adequacy	0.95 (0.58 to 1.57)	0.8572	0.99 (0.60 to 1.61)	0.9518
Maternal education level	0.59 (0.34 to 1.02)	0.0606	0.68 (0.41 to 1.13)	0.1370

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