Universidade Federal do Rio Grande do Norte - UFRN - Natal (RN), Brasil.
Universidade Federal da Paraíba - UFPB - João Pessoa (PB), Brasil.
Codas. 2022 May 9;34(6):e20210274. doi: 10.1590/2317-1782/20212021274. eCollection 2022.
Verify how demographic and socioeconomic variables on the in-noise speech recognition threshold (SRT) from the digits-in-noise test (DIN) in Brazilian Portuguese influence normal-hearing subjects.
Cross-sectional, prospective study. The convenience sample had 151 normal-hearing subjects between 12 and 79 years (mean=34.66) who underwent pure tone audiometry and digits-in-noise test with white noise using a sequence of three numbers in diotic stimulus (in-phase) on the same day. The DIN was performed using a Motorola Z3 Play smartphone with internet access and in-ear headphones. In-noise digit speech recognition threshold (SRT) was analyzed for gender, age, educational levels, and socioeconomic status. We used the non-parametric version of the Kruskal-Wallis and Mann-Whitney U tests to compare independent samples adopting a significance level of 5%.
The mean SRT was -8.47 dBNA (SD -3.89) with a median of -9.6 dBNA. The SRT was proportionally inverse to educational levels and socioeconomic status and more negative (better) with lower age groups. Gender did not influence the DIN SRT.
Age, educational levels, and socioeconomic status influenced the DIN threshold. These variables must be considered when analyzing DIN performance in Brazilian Portuguese in normal-hearing subjects.
验证巴西葡萄牙语噪声下言语识别阈（SRT）的人口统计学和社会经济变量如何影响正常听力受试者。
这是一项横断面、前瞻性研究。便利样本包括 151 名年龄在 12 至 79 岁（平均 34.66 岁）的正常听力受试者，他们在同一天接受了纯音测听和使用白噪声的数字噪声测试，刺激为同相的三个数字。DIN 使用具有互联网访问功能的 Motorola Z3 Play 智能手机和入耳式耳机进行。分析噪声下数字言语识别阈值（SRT）与性别、年龄、教育程度和社会经济地位的关系。我们使用非参数版本的 Kruskal-Wallis 和 Mann-Whitney U 检验来比较独立样本，并采用 5%的显著性水平。
平均 SRT 为-8.47dBNA（SD-3.89），中位数为-9.6dBNA。SRT 与教育程度和社会经济地位成反比，与年龄较小的组相比更负（更好）。性别不影响 DIN SRT。
年龄、教育程度和社会经济地位影响 DIN 阈值。在分析巴西葡萄牙语正常听力受试者的 DIN 表现时，必须考虑这些变量。
