Assessment of Multidimensional Voice Program (MDVP) Parameters in Occupational and Non-occupational Voice Users: a Secondary Data Analysis
试验速览
- 阶段
- 不适用
- 入组人数
- 500
- 主要终点
- Jitter
研究概览
简要总结
MDVP (Multidimensional Voice Program) has several parameters that can assess voice quality objectively, including Base Frequency (F0), Jitter, Shimmer, NHR (Noise to Harmonic Ratio), VTI (Voice Turbulence Index), and ATRI (Amplitude Tremor Intensity Index). MDVP may provide an objective yet non-invasive and comfortable alternative to assess voice quality - and to some extent, diagnose voice-related abnormalities. The utilization of MDVP in clinical settings is quite common but using it concerning occupational health is rare, especially in Indonesia. No study had reported usage of MDVP to assess voice quality in any occupational voice user group or reported a thorough comparison of MDVP parameters between occupational and non-occupational voice users. With an increase in the realization that voice can be an essential occupational modality, MDVP may become a practical alternative modality in assessing voice quality and occupational-related voice injury in clinical settings. This study will determine any association between occupational voice users and their MDVP parameters from medical records and the MDVP database in Dr Cipto Mangunkusumo Hospital, Jakarta. The study also tries to see whether there is any value in using MDVP to assess voice quality in workers.
详细描述
Data will be extracted from the MDVP database and hospital medical records. The MDVP database consists of patients examined with MDVP in the Department of ORL-HNS' Larynx-Pharynx clinic of Dr. Cipto Mangunkusumo Hospital, Jakarta.
Voice evaluation for all patients in Dr. Cipto Mangunkusuomo Hospital was done using the Multidimensional Voice Program (MDVP) 4500 produced by Kay Elemetrics Corp installed on a personal computer. The patients were asked to emit vocal sounds /" a "/ using the tone and intensity of everyday speech. The physicians are obliged to give an example first. The patient's voice was then recorded using a microphone connected to a computer with the MDVP program. Sounds were recorded in a quiet room for at least 3 seconds with the microphone 10 cm from the patient's mouth. The MDVP program will directly analyze the recorded sound. Sound recording is done 3 - 5 times, and the best sound acoustic analysis results are used as the final result. The results are then kept in the program's database inside the computer.
Patients who attend the Larynx-Pharynx clinic for MDVP evaluations are usually those who comes for post-treatment monitoring (e.g., post-laryngoplasty), had been diagnosed with a voice disorders, and or by personal or physicians' request. There are various reasons why patients are being assigned to MDVP evaluations - and all of this information will be gathered and used as a consideration during data analysis. For the sake of practicality, the researcher will only extract MDVP data from the past five years. Other considerations will be made to ensure that the data extracted will represent a reliable comparison between occupation status and how it affects MDVP parameters (see more in "Criteria for subjects"). The study will use total sampling, where all available data that fits the inclusion criteria will be used for analysis.
Inclusion criteria
- Patients had their medical records and MDVP data available in dr. Cipto Mangunkusumo Hospital, Jakarta
- Patients are active workers in Indonesia on the time of MDVP evaluation
- Patients are above the age of 18
- Patients can be either an occupational or non-occupational voice users Exclusion criteria
- Patients with incomplete occupational data
- Patient with incomplete MDVP results
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Patients had their medical records and MDVP data available in dr. Cipto Mangunkusumo Hospital, Jakarta
- •Patients are active workers in Indonesia on the time of MDVP evaluation
- •Patients are above the age of 18
- •Patients can be either an occupational or non-occupational voice users
排除标准
- •Patients with incomplete occupational data
- •Patient with incomplete MDVP results
结局指标
主要结局
Jitter
时间窗: 3 minutes minimal
Jitter refers to a disruption in sound wave frequencies caused by a lack of control over the vibrations of the vocal cords.
F0 (Fundamental Frequency)
时间窗: 3 minutes minimal
Average fundamental frequency for the vocalization measured in Hz
Shimmer
时间窗: 3 minutes minimal
Shimmer percent gives an evaluation in percent of the variability of the peak-to-peak amplitude within the analyzed voice samples. It represents the relative period-to-period (very short-term) variability of the peak-to-peak amplitude
NHR (Noise to Harmonic Ratio)
时间窗: 3 minutes minimal
Noise-to-harmonic ratio is an average ratio of energy of the in-harmonic components in the range 1500-4500 Hz to the harmonic components energy in the rage 70-4500 Hz. It is a general evaluation of the noise present in the vocalization
ATRI (Amplitude Tremor Intensity Index)
时间窗: 3 minutes minimal
Amplitude tremor intensity index shows (in percent) the ratio of the amplitude of the most intensive low-frequency amplitude-modulating component (amplitude tremor) to the total amplitude of the analyzed voice signal.
次要结局
未报告次要终点