Table 3.

Association Between Irritability Score at Ages 3, 5, and 7 Years and Self-Harm at Age 14 Years (n = 6,162)

Model	Irritability at 3 y, odds ratio (95% CI), p	Irritability at 5 y, odds ratio (95% CI), p	Irritability at 7 y, odds ratio (95% CI), p
Univariable model	1.06 (1.02-1.10), p = .004	1.08 (1.04-1.13), p = .001	1.09 (1.05-1.14), p < .001
Adjusted model 1: child sex and child ethnicity	1.07 (1.02-1.11), p = .002	1.10 (1.05-1.15), p < .001	1.12 (1.07-1.17), p < .001
Adjusted model 2: model 1 plus maternal age, maternal education, maternal social class, family income quintile, family housing tenure, maternal lifetime depressive symptoms, maternal depressive symptoms at 3 y	1.03 (0.99-1.08), p = .169	1.07 (1.02-1.12), p = .011	1.10 (1.05-1.15), p < .001
Adjusted model 3: model 2 plus child school readiness and vocabulary level at age 3 y	1.04 (0.99-1.08), p = .091	1.07 (1.02-1.13), p = .007	1.10 (1.05-1.15), p < .001
Adjusted model 4: model 3 plus prior child emotional, peer, hyperactivity and conduct problems score	1.02 (0.97-1.07), p = .410	1.06 (1.01-1.12), p = .037	1.08 (1.03-1.14), p = .003

Note: Results of univariable and multivariable linear regression models in those with complete exposure, outcome and confounder data using population weights.