The Effect of Bangerter Occlusion Foils on Blepharospasm and Hemifacial Spasm in Occlusion-Positive and Occlusion-Negative Patients

Table 2: Mean Change (Pre-Intervention Minus Post-Intervention) in Outcome Scores

Mean Change	Occlusion-Positive	Occlusion-Negative	Exact Significance of Difference Between OP and ON Groups (Mann-Whitney Test)
CDQ24 Total Score	7.2	-2.7	0.147
a. Stigma	3.6	-0.6	0.147
b. Emotional	1.2	0.2	0.518
c. Pain	1.4	0.0	0.147
d. ADL	1.0	-2.7	0.438
e. Social	0.0	0.3	0.699
Blink-Rate	39.8	-20.4	0.029
Frequency of Movement	1.2	0.3	0.240
Severity of Movement	1.4	-0.1	0.019

a-e = the five subscales of the 24-item CDQ-24 QOL.NB. A positive mean indicates that the post-treatment value is lower than the pre-treatment value (improvement), whilst a negative mean indicates that the post-treatment value is higher than the pre-treatment value (worsening).