Table 2.

Fixed effect parameter estimation—positive score

Predictor variable	Estimate	Std. error	DF	p value
Positive
Intercept	− 3.26	37.36	466	0.93
Day	− 0.02	0.02	466	0.23
Level of current social interaction	0.14	0.04	466	< 0.01*
Quality of current social interaction	0.13	0.01	466	< 0.01*
Enjoyment of current activity	0.02	0.01	466	0.11
Duration of assessment	0	0	466	0.79
Verbal IQ	− 0.38	2.74	7	0.89
Non-verbal IQ	− 0.54	2.67	7	0.85
IQ	0.12	0.91	7	0.9
Genetic sibling with ASD	0.66	0.61	7	0.32
Parent-reported overall health	− 0.77	0.26	7	< 0.02*
Parent-reported pubertal skin changes	0.54	0.6	7	0.39
Parent-reported pubertal hair changes	1.34	0.46	7	0.02*
Parent-reported pubertal voice changes	− 0.96	0.51	7	0.1
Negative
Intercept	− 13.9	22.49	466	0.5368
Day	− 0.002	0.01	466	0.8060
Level of social interaction	0.02	0.02	466	0.5280
Quality of social interaction	− 0.04	0.01	466	< 0.01*
Enjoyment of current activity	0.005	0.01	466	0.4654
Duration	0	0	466	0.2402
Verbal IQ	− 1.23	1.65	7	0.4794
Non-verbal IQ	− 1.24	1.61	7	0.4646
ABIQ	0.42	0.55	7	0.4726
Genetic sibling with ASD	− 0.12	0.37	7	0.7520
Parent-reported overall health	0.05	0.16	7	0.7664
Parent-reported pubertal skin changes	− 0.3	0.36	7	0.4286
Parent-reported pubertal hair changes	− 0.45	0.28	7	0.1480
Parent-reported pubertal voice changes	0.31	0.31	7	0.3417

For brevity, only 14 variables for positive momentary affect and negative momentary affect (total of 28 variables) are presented. These variables were chosen to be presented because they explained the most variance in depressive symptomatology

Asterisk indicates a p-value significant at the 0.05 level