*7.1.2 Modified Bazaz questionnaire*

It is a modification of Bazaz Dysphagia Score into a ten-points scale recorded daily for four days, with dysphagia being defined as a cumulative four-day score of ≥12 [30]. As seen in **Table 4**.


#### **Table 3.**

*Bazaz dysphagia scoring system [2].*


#### **Table 4.**

*Modified Bazaz dysphagia scoring system [15]. Assessment is undertaken on the day of operation and on the first, third and fifth post-operative days; the scores are added together, with dysphagia defined as a cumulative score of* ≥ *12.*

*Dysphagia Following Anterior Cervical Spine Surgery DOI: http://dx.doi.org/10.5772/intechopen.101799*

*7.1.3 Dysphagia numerical rating scale*

Assess the postoperative dysphagia using numeric scale [31].

*7.1.4 Dysphagia disability index*

Includes also physical function and emotional domains [31].

*7.1.5 Swallowing-quality of life (SWAL-QOL) questionnaire*

Swallowing-quality of life (SWAL-QOL) questionnaire is a validated 93-item questionnaire that quantifies dysphagia on the basis of severity and duration as well as its psychological impact [32], although it is has been shown to be valid and reliable, its length and complexity make it less practical in the clinical setting.
