Table 2–2. Complete sternomastoid statistical results across lifespan- mixed male and female dataset.

Best fit distribution used to fit GLM for each morphological measurement and associated p-values for genotype, sex, and interaction effects as applicable. GLMs fit by minimization of AIC. Significant p-values in bold. Note males only were used at P30 and 2 years; data for these ages is from the male-only dataset in Table 1-2.

Measurement	Statistics	P14	P21	P30	3 months	14 months	2 years
Nerve Terminal	Distribution	gamma	gamma	gamma	gamma	gamma	gamma
Area	Genotype P Value	0.699	0.0655	0.0652	0.0391	0.1819	0.867
	Sex P Value	0.508	0.3191	N/A	9.43e-07	0.0046	N/A
	Interaction P Value	0.110	0.0173	N/A	0.0564	0.0085	N/A
AChR Area	Distribution	gamma	gamma	gamma	gamma	gamma	gamma
	Genotype P Value	0.0497	0.0184	0.0164	0.000927	0.2059	0.344
	Sex P Value	0.9140	0.1575	N/A	7.23e-10	5.94e-05	N/A
	Interaction P Value	0.0960	0.2809	N/A	0.001046	0.0063	N/A
Endplate Area	Distribution	gamma	gamma	gamma	gamma	gamma	gamma
	Genotype P Value	0.107	0.00194	0.637	0.05626	0.4426	0.281
	Sex P Value	0.820	0.47118	N/A	5.3e-12	3.29e-05	N/A
	Interaction P Value	0.721	0.50187	N/A	0.00232	0.0177	N/A
Compactness	Distribution	beta	beta	beta	beta	beta	beta
	Genotype P Value	0.0129	0.0066	0.00192	0.334	0.545	0.0135
	Sex P Value	0.0432	0.1530	N/A	1.44e-09	0.144	N/A
	Interaction P Value	4.82e-06	0.9476	N/A	0.310	0.562	N/A
Fragmentation	Distribution	poisson	poisson	negative binomial	negative binomial	negative binomial	negative binomial
	Genotype P Value	0.550	6.18e-05	1.89e-05	0.032187	5.87e-05	0.0236
	Sex P Value	0.641	0.949	N/A	0.000114	0.909	N/A
	Interaction P Value	0.899	0.843	N/A	0.016528	0.413	N/A