The CogBIAS longitudinal study of adolescence: cohort profile and stability and change in measures across three waves

Charlotte Booth; Annabel Songco; Sam Parsons; Lauren Charlotte Heathcote; Elaine Fox

doi:10.1186/s40359-019-0342-8

Table 3 Parameter estimates for linear growth curve models testing change over time at three waves

From: The CogBIAS longitudinal study of adolescence: cohort profile and stability and change in measures across three waves

Self-report mood measures		Model test				Fixed effects					Random effects
		ICC	-2LL	∆ p	γ₀₀	SE	p	γ₁₀	SE	p	τ₀₀	τ₁₁	τ₀₁
Anxiety	Intercept only	.60	− 4444.00		13.73	0.30	<.001				6.02
N = 504	Fixed slopes		− 4443.34	.252	13.56	0.34	<.001	0.19	0.17	.252	6.02
	Random slopes		− 4427.29	<.001	13.56	0.34	<.001	0.21	0.19	.283	6.57	2.68	−.32
Depression	Intercept only	.58	− 4099.91		9.14	0.23	<.001				4.53
N = 504	Fixed slopes		− 4073.72	<.001	8.31	0.25	<.001	0.95	0.13	<.001	4.56
	Random slopes		− 4050.70	<.001	8.31	0.24	<.001	0.94	0.15	<.001	4.48	1.99	−.07
Rumination	Intercept only	.47	− 2633.23		6.08	0.08	<.001				1.41
N = 502	Fixed slopes		− 2607.49	<.001	5.76	0.09	<.001	0.38	0.05	<.001	1.41
	Random slopes		− 2593.13	<.001	5.75	0.09	<.001	0.39	0.06	<.001	1.73	0.74	−.56
Resilience	Intercept only	.56	− 4236.59		23.95	0.29	<.001				5.65
N = 500	Fixed slopes		− 4234.63	.047	24.25	0.33	<.001	−0.36	0.18	.048	5.65
	Random slopes		− 4233.40	.293	24.26	0.33	<.001	−0.37	0.18	.050	5.77	1.41	−.17
Self esteem	Intercept only	.57	− 882.04		1.78	0.02	<.001				0.41
N = 504	Fixed slopes		− 874.21	<.001	1.83	0.02	<.001	−0.05	0.01	<.001	0.41
	Random slopes		− 858.26	<.001	1.83	0.02	<.001	−0.05	0.01	<.001	0.41	0.17	−.08
Wellbeing	Intercept only	.57	− 5100.03		41.98	0.56	<.001				11.02
N = 498	Fixed slopes		− 5099.45	.283	41.64	0.64	<.001	0.36	0.34	.283	11.01
	Random slopes		− 5078.22	<.001	41.58	0.58	<.001	0.45	0.36	.218	9.74	3.92	.26
Worry	Intercept only	.64	− 1113.28		1.61	0.03	<.001				0.53
N = 504	Fixed slopes		− 1109.24	.004	1.57	0.03	<.001	0.03	0.01	.005	0.53
	Random slopes		− 1099.47	<.001	1.57	0.03	<.001	0.04	0.01	.007	0.57	0.19	−.29
Other self-report measures		Model test			Fixed effects						Random effect
		ICC	-2LL	∆ p	γ₀₀	SE	p	γ₀₀	SE	p	τ₀₀	τ₁₁	τ₀₁
BAS Drive N = 501	Intercept only	.47	− 1205.31		1.20	0.02	<.001				0.46
	Fixed slopes		− 1200.16	.001	1.15	0.02	<.001	0.05	0.01	.001	0.46
	Random slopes		− 1197.56	.074	1.15	0.03	<.001	0.06	0.02	.002	0.51	0.17	−.37
BAS Fun N = 501	Intercept only	.51	− 1123.33		1.70	0.02	<.001				0.46
	Fixed slopes		− 1122.51	.197	1.72	0.03	<.001	−0.02	0.02	.198	0.46
	Random slopes		− 1121.00	.223	1.72	0.03	<.001	−0.02	0.02	.213	0.47	0.14	−.19
Cognitive restraint N = 502	Intercept only	.44	− 3695.66		13.46	0.16	g < .001				2.98
	Fixed slopes		−3695.63	.813	13.44	0.19	<.001	0.02	0.11	.813	2.98
	Random slopes		− 3679.59	<.001	13.44	0.18	<.001	0.01	0.13	.933	3.09	1.67	−.22
Emotional eating N = 502	Intercept only	.45	− 3038.18		5.81	0.10	<.001				1.83
	Fixed slopes		− 3017.20	<.001	5.41	0.11	<.001	0.45	0.07	<.001	1.84
	Random slopes		− 3007.83	<.001	5.41	0.11	<.001	0.45	0.07	<.001	1.83	0.80	−.11
Uncontrolled eating N = 501	Intercept only	.49	− 4004.05		20.47	0.22	<.001				4.10
	Fixed slopes		− 3991.11	<.001	19.83	0.25	<.001	0.74	0.14	<.001	4.12
	Random slopes		− 3987.04	.017	19.82	0.26	<.001	0.76	0.15	<.001	4.52	1.56	−.36
Lack of Perseverance N = 504	Intercept only	.42	− 967.906		2.11	0.02	<.001				0.35
	Fixed slopes		− 961.947	<.001	2.15	0.02	<.001	−0.05	0.01	<.001	0.35
	Random slopes		− 959.146	.061	2.15	0.02	<.001	−0.05	0.01	<.001	0.40	0.15	−.48
Lack of premeditation N = 504	Intercept only	.45	− 903.034		2.23	0.02	<.001				0.35
	Fixed slopes		− 889.513	<.001	2.29	0.02	<.001	−0.07	0.01	<.001	0.35
	Random slopes		− 888.698	.442	2.29	0.02	<.001	−0.07	0.02	<.001	0.37	0.09	−.36
Negative urgency N = 504	Intercept only	.54	− 1057.69		2.52	0.02	<.001				0.45
	Fixed slopes		−1052.65	.001	2.48	0.03	<.001	0.05	0.01	.001	0.45
	Random slopes		−1046.61	.002	2.48	0.03	<.001	0.05	0.01	.003	0.46	0.16	−.17
Sensation seeking N = 504	Intercept only	.73	− 1103.82		2.96	0.03	<.001				0.62
	Fixed slopes		− 1102.97	.190	2.98	0.03	<.001	−0.02	0.01	.191	0.62
	Random slopes		− 1096.78	.002	2.98	0.03	<.001	−0.02	0.01	.172	0.64	0.17	−.19
Negative life events N = 503	Intercept only	.48	− 3604.32		5.34	0.15	<.001				2.74
	Fixed slopes		− 3602.05	.033	5.53	0.17	<.001	−0.21	0.10	.033	2.74
	Random slopes		− 3598.19	.021	5.53	0.18	<.001	−0.22	0.10	.030	3.09	0.64	−.65
Risk involvement N = 503	Intercept only	.57	− 2803.55		4.19	0.09	<.001				1.80
	Fixed slopes		− 2722.83	<.001	2.94	0.13	<.001	0.67	0.05	<.001	1.88
	Random slopes		− 2707.75	<.001	2.93	0.13	<.001	0.68	0.05	<.001	1.96	0.66	−.34
Victimisation N = 503	Intercept only	.56	− 4294.59		9.96	0.29	<.001				5.61
	Fixed slopes		− 4293.69	.182	10.16	0.32	<.001	−0.24	0.18	.182	5.61
	Random slopes		− 4289.18	.011	10.16	0.33	<.001	−0.24	0.19	.199	6.01	1.99	−.31
Behavioural measures		Model test			Fixed effects						Random effects
		ICC	-2LL	∆ p	γ₀₀	SE	p	γ₁₀	SE	p	τ₀₀	τ₁₁	τ₀₁
Memory bias N = 504	Intercept only	.44	− 732.596		−0.39	0.02	<.001				0.30
	Fixed slopes		− 689.730	<.001	−0.48	0.02	<.001	0.10	0.01	<.001	0.31
	Random slopes		− 686.670	.046	−0.48	0.02	<.001	0.10	0.01	<.001	0.33	0.11	−.31
Non-social interpretation bias N = 504	Intercept only	.48	− 1794.36		−0.41	0.04	<.001				0.70
	Fixed slopes		− 1788.87	<.001	−0.34	0.04	<.001	−0.08	0.02	<.001	0.70
	Random slopes		− 1786.81	.128	−0.34	0.04	<.001	−0.08	0.02	.001	0.75	0.23	−.30
Social interpretation bias N = 504	Intercept only	.54	− 2021.78		0.61	0.05	<.001				0.91
	Fixed slopes		−2018.65	.012	0.68	0.05	<.001	−0.07	0.03	.012	0.91
	Random slopes		−2005.68	<.001	0.68	0.05	<.001	−0.07	0.03	.023	0.97	0.41	−.30

Note: Bold indicates best fitting model; only variables that showed high stability were modelled; ICC = Intraclass Correlation Coefficient from the intercept only model; −2LL = Log-likelihood value; ∆ p = p-value for change in model fit; SE = Standard Error; γ₀₀ = Intercept; γ₁₀ = Slope; τ₀₀ = Intercept variance; τ₁₁ = Slope variance; τ₀₁ = Covariance between random effects

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