Neck pain and emotional state in cervical spondylosis: A dual trajectory model analysis

Table 3 Results of the Neck Pain Questionnaire score trajectory parameter estimation

Groups	Parameters	Estimated value	Standard error	T score	P value
Low	Intercept	22.170	0.752	29.462	< 0.001
	Linear	-5.624	0.666	-8.447	< 0.001
	Quadratic curve	1.104	0.140	7.861	< 0.001
	Cubic curve	-0.052	0.008	-6.798	< 0.001
Medium	Intercept	45.211	0.681	66.393	< 0.001
	Linear	-10.425	0.578	-18.046	< 0.001
	Quadratic curve	2.138	0.122	17.582	< 0.001
	Cubic curve	-0.106	0.007	-15.839	< 0.001
High	Intercept	69.448	0.919	75.597	< 0.001
	Linear	-14.400	0.816	-17.654	< 0.001
	Quadratic curve	2.986	0.172	17.392	< 0.001
	Cubic curve	-0.148	0.009	-15.676	< 0.001
Group members (%)
Low		33.250	2.309	14.397	< 0.001
Medium		44.527	2.436	18.276	< 0.001
High		22.223	2.002	11.102	< 0.001