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A novel laryngeal palpatory scale (LPS) in patients with muscle tension dysphonia

Author
Organization
Abstract
Objectives: Laryngeal palpation is a routine clinical method for evaluation of patients with muscle tension dysphonia (MTD). The aim of this study was to develop a new comprehensive valid and reliable “laryngeal palpatory scale” (LPS), based on psychometric criteria. Methods: The scale items were selected based on an in-depth analysis of the literature and an expert focus group. Scale item generation and item reduction were followed by a psychometric assessment. Qualitative and quantitative content validity (the content validity ratio (CVR), content validity index (CVI)), the qualitative face validity, and the inter-rater reliability were determined. For this purpose, 531 patients were assessed and finally 55 patients with primary MTD (26 women, mean age: 40.8 years, SD: 12.5; 29 male, mean age: 41.6 years, SD: 11.8) participated in the study. A weighted kappa (k*) statistic was used to examine the inter-rater reliability for each single item. Results: Based on the CVR, three items were omitted because they had a score of less than 0.62. The CVI for all remaining items was greater than 0.79 and the scale CVI was equal to 0.96. The final 45 items were a result of the study. The inter-rater reliability for each single item ranged from 0.41 to 1, indicating moderate to almost perfect agreement. Conclusions: The LPS is a reliable and valid instrument for assessing patients with MTD. However, future studies are needed to provide adequate data on sensitivity, specificity, concurrent validity, and cutoff scores.
Keywords
Speech and Hearing, LPN and LVN, Otorhinolaryngology

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Chicago
Jafari, Narges, Abolfazl Salehi, Iris Meerschman, Farzad Izadi, Abbas Ebadi, Saeed Talebian, Seyyedeh Maryam Khoddami, et al. 2019. “A Novel Laryngeal Palpatory Scale (LPS) in Patients with Muscle Tension Dysphonia.” Journal of Voice.
APA
Jafari, N., Salehi, A., Meerschman, I., Izadi, F., Ebadi, A., Talebian, S., Khoddami, S. M., et al. (2019). A novel laryngeal palpatory scale (LPS) in patients with muscle tension dysphonia. JOURNAL OF VOICE.
Vancouver
1.
Jafari N, Salehi A, Meerschman I, Izadi F, Ebadi A, Talebian S, et al. A novel laryngeal palpatory scale (LPS) in patients with muscle tension dysphonia. JOURNAL OF VOICE. 2019;
MLA
Jafari, Narges et al. “A Novel Laryngeal Palpatory Scale (LPS) in Patients with Muscle Tension Dysphonia.” JOURNAL OF VOICE (2019): n. pag. Print.
@article{8579728,
  abstract     = {Objectives: Laryngeal palpation is a routine clinical method for evaluation of patients with muscle tension dysphonia (MTD). The aim of this study was to develop a new comprehensive valid and reliable {\textquotedblleft}laryngeal palpatory scale{\textquotedblright} (LPS), based on psychometric criteria.
Methods: The scale items were selected based on an in-depth analysis of the literature and an expert focus group. Scale item generation and item reduction were followed by a psychometric assessment. Qualitative and quantitative content validity (the content validity ratio (CVR), content validity index (CVI)), the qualitative face validity, and the inter-rater reliability were determined. For this purpose, 531 patients were assessed and finally 55 patients with primary MTD (26 women, mean age: 40.8 years, SD: 12.5; 29 male, mean age: 41.6 years, SD: 11.8) participated in the study. A weighted kappa (k*) statistic was used to examine the inter-rater reliability for each single item.
Results: Based on the CVR, three items were omitted because they had a score of less than 0.62. The CVI for all remaining items was greater than 0.79 and the scale CVI was equal to 0.96. The final 45 items were a result of the study. The inter-rater reliability for each single item ranged from 0.41 to 1, indicating moderate to almost perfect agreement.
Conclusions: The LPS is a reliable and valid instrument for assessing patients with MTD. However, future studies are needed to provide adequate data on sensitivity, specificity, concurrent validity, and cutoff scores.},
  author       = {Jafari, Narges and Salehi, Abolfazl and Meerschman, Iris and Izadi, Farzad and Ebadi, Abbas and Talebian, Saeed and Khoddami, Seyyedeh Maryam and Dabirmoghadam, Payman and Drinnan, Michael and Jordens, Karolien and D'haeseleer, Evelien and Van Lierde, Kristiane},
  issn         = {0892-1997},
  journal      = {JOURNAL OF VOICE},
  language     = {eng},
  title        = {A novel laryngeal palpatory scale (LPS) in patients with muscle tension dysphonia},
  url          = {http://dx.doi.org/10.1016/j.jvoice.2018.09.003},
  year         = {2019},
}

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