Table 2. Stepwise logistic regression modelling for factors associated with TMD symptoms.

TMD symptom	Variable	Regression Coefficient	P-value	OR	Confidence limits for OR
Clicking	College type		<0.01
	Humanity	Reference category		1.00
	Science	0.349	0.06	1.42	0.98-2.05
	Health	0.622	<0.01	1.86	1.42-2.45
	Positive history of trauma	0.486	0.02	1.63	1.07-2.47
	Arthralgia in other joints	0.442	<0.01	1.56	1.16-2.08
	Stress	0.579	<0.01	1.78	1.38-2.31
Trismus	College type		<0.01
	Humanity	Reference category		1.00
	Science	0.630	<0.01	1.88	1.24-2.85
	Health	0.374	0.03	1.45	1.05-2.02
	Positive history of trauma	0.872	<0.01	2.39	1.55-3.69
	Arthralgia in other joints	0.562	<0.01	1.76	1.27-2.42
	Stress	0.617	<0.01	1.85	1.36-2.53
Pain in or about ears	College type		<0.01
	Humanity	Reference category		1.00
	Science	0.424	0.03	1.53	1.04-2.24
	Health	-0.273	0.06	0.76	0.58-1.01
	Positive history of trauma	0.734	<0.01	2.08	1.34-3.25
	Arthralgia in other joints	0.822	<0.01	2.28	1.69-3.07
	Stress	0.647	<0.01	1.91	1.47-2.49
	Males	0.632	<0.01	1.88	1.39-2.55
Locking	College type		<0.01
	Humanity	Reference category		1.00
	Science	0.664	<0.01	1.94	1.22-3.09
	Health	-0.204	0.32	0.82	0.55-1.22
	Positive history of trauma	1.125	<0.01	3.08	1.93-4.92
	Stress	1.196	<0.01	3.31	2.23-4.89
Pain on chewing	College type		<0.01
	Humanity	Reference category		1.00
	Science	0.860	<0.01	2.36	1.61-3.47
	Health	0.039	0.79	1.04	0.78-1.39
	Positive history of trauma	1.038	<0.01	2.82	1.82-4.39
	Arthralgia in other joints	0.696	<0.01	2.01	1.49-2.70
	Stress	0.916	<0.01	2.5	1.90-3.29