Abstract：
BACKGROUND: Yearling laryngeal function (YLF) is frequently assessed at the time of sale and the outcomes of these assessments can have significant economic implications. The YLF of horses that subsequently underwent a prosthetic laryngoplasty (PL) is unknown.
OBJECTIVE: We hypothesised horses with YLF ≥grade II.2 would be at increased risk of requiring PL, compared with YLFMETHODS: Case-control.
METHODS: There were 150 PL cases from 2019 to 2021 with an available yearling post-sale videoendoscopic examination and 600 controls. Two observers unaware of the outcome graded YLF using the Havemeyer system. The risk of PL for each YLF grade was calculated using multivariable conditional logistic regression.
RESULTS: The proportions of each YLF grade in the control group and PL group, respectively, were grade I: 25.8% and 13.3%, grade II.1: 54.3% and 35.3%, grade II.2: 16.7% and 26%, grade III.1: 3% and 20.7%, grade III.2: 0.2% and 3.3%, grade III.3: 0% and 0.7%, grade IV: 0% and 0.7%. The odds ratio (OR, 95% confidence interval) of requiring PL compared with the referent grade I were: grade II.1: 1.2 (0.7, 2.2, p = 0.5), grade II.2: 3.4 (1.8, 6.1, p < 0.001), grade III.1: 13.8 (6.0, 31.6, p < 0.001), grade III.2: 55.5 (10.3, 299.2, p < 0.001), grade III.3: 2930,000 (398173.7, 21 600,000, p < 0.001), grade IV: 26300,000 (3 420 000, 202 000 000, p < 0.001). Yearling LF ≥grade II.2 had an OR of 4.61 (3.0, 7.1, p < 0.001) compared withCONCLUSIONS: Lack of performance data to compare the PL and control groups. The control group was not \'disease-free\' and may have developed disease and been retired or undergone surgery elsewhere.
CONCLUSIONS: Three-quarters of the PL group had ≤grade II.2 YLF, demonstrating deterioration in LF post-sale was common. The risk of requiring PL increased from YLF grade II.2 upwards.
背景: 一岁马驹喉功能(YLF)经常在出售时进行评估，这些评估的结果可能具有重要的经济意义。接受喉修补成形术的马驹的YLF以往是未知的。. 目的: 我们假设:一岁马驹喉功能YLF≥II.2级的马驹，需要喉修补成形术PL的风险增加。. 研究设计: 1:4病例对照研究. 方法: 对2019‐2021年的150例PL病例的周岁拍卖内窥镜检查结果，和600例对照。双盲法Havemeyer系统对YLF进行评分。使用多变量条件逻辑回归计算每个YLF等级的PL风险。. 结果: 对照组和PL组各YLF分级所占比例分别为:I级:25.8%和13.3%； II.1级:54.3%和35.3%； II.2级:16.7%和26%；III.1级:1.3%和20.7%；III.2级:0.2%和3.3%；III.3级:0%和0.7%；IV级:0%和0.7%。. 与I级参考相比，需要PL的比值(OR, 95%置信区间)为: II.1级:1.2 (0.7，2.2，p = 0.5)； ii.2级:3.4 (1.8，6.1，p < 0.001)， iii.1级:13.8 (6.0，31.6，p < 0.001)， iii.2级:55.5 (10.3，299.2，p < 0.001)； iii.3级:2930000 (398173.7，21 600 000，p < 0.001)， IV级:26300000 (3 420 000,202 000 000，p < 0.001)。与LF小于II.2级的马驹相比，LF≥II.2级的OR为4.61 (3.0，7.1，p < 0.001)；与 < III.1级相比，YLF≥III.1级的OR为10.7 (5.6，20.4，p < 0.001)。. 主要限制: 缺乏其他性能数据来比较试验组和对照组。对照组并非“无病”，可能也患病，退役或有其他位置手术。. 结论: PL组3 / 4患者的YLF≤II.2级，表明马驹拍卖后喉功能恶化较为常见。需要PL的风险从YLF II.2级上升。.
OBJECTIVE: We hypothesised horses with YLF ≥grade II.2 would be at increased risk of requiring PL, compared with YLF
METHODS: There were 150 PL cases from 2019 to 2021 with an available yearling post-sale videoendoscopic examination and 600 controls. Two observers unaware of the outcome graded YLF using the Havemeyer system. The risk of PL for each YLF grade was calculated using multivariable conditional logistic regression.
RESULTS: The proportions of each YLF grade in the control group and PL group, respectively, were grade I: 25.8% and 13.3%, grade II.1: 54.3% and 35.3%, grade II.2: 16.7% and 26%, grade III.1: 3% and 20.7%, grade III.2: 0.2% and 3.3%, grade III.3: 0% and 0.7%, grade IV: 0% and 0.7%. The odds ratio (OR, 95% confidence interval) of requiring PL compared with the referent grade I were: grade II.1: 1.2 (0.7, 2.2, p = 0.5), grade II.2: 3.4 (1.8, 6.1, p < 0.001), grade III.1: 13.8 (6.0, 31.6, p < 0.001), grade III.2: 55.5 (10.3, 299.2, p < 0.001), grade III.3: 2930,000 (398173.7, 21 600,000, p < 0.001), grade IV: 26300,000 (3 420 000, 202 000 000, p < 0.001). Yearling LF ≥grade II.2 had an OR of 4.61 (3.0, 7.1, p < 0.001) compared with
CONCLUSIONS: Three-quarters of the PL group had ≤grade II.2 YLF, demonstrating deterioration in LF post-sale was common. The risk of requiring PL increased from YLF grade II.2 upwards.
背景: 一岁马驹喉功能(YLF)经常在出售时进行评估，这些评估的结果可能具有重要的经济意义。接受喉修补成形术的马驹的YLF以往是未知的。. 目的: 我们假设:一岁马驹喉功能YLF≥II.2级的马驹，需要喉修补成形术PL的风险增加。. 研究设计: 1:4病例对照研究. 方法: 对2019‐2021年的150例PL病例的周岁拍卖内窥镜检查结果，和600例对照。双盲法Havemeyer系统对YLF进行评分。使用多变量条件逻辑回归计算每个YLF等级的PL风险。. 结果: 对照组和PL组各YLF分级所占比例分别为:I级:25.8%和13.3%； II.1级:54.3%和35.3%； II.2级:16.7%和26%；III.1级:1.3%和20.7%；III.2级:0.2%和3.3%；III.3级:0%和0.7%；IV级:0%和0.7%。. 与I级参考相比，需要PL的比值(OR, 95%置信区间)为: II.1级:1.2 (0.7，2.2，p = 0.5)； ii.2级:3.4 (1.8，6.1，p < 0.001)， iii.1级:13.8 (6.0，31.6，p < 0.001)， iii.2级:55.5 (10.3，299.2，p < 0.001)； iii.3级:2930000 (398173.7，21 600 000，p < 0.001)， IV级:26300000 (3 420 000,202 000 000，p < 0.001)。与LF小于II.2级的马驹相比，LF≥II.2级的OR为4.61 (3.0，7.1，p < 0.001)；与 < III.1级相比，YLF≥III.1级的OR为10.7 (5.6，20.4，p < 0.001)。. 主要限制: 缺乏其他性能数据来比较试验组和对照组。对照组并非“无病”，可能也患病，退役或有其他位置手术。. 结论: PL组3 / 4患者的YLF≤II.2级，表明马驹拍卖后喉功能恶化较为常见。需要PL的风险从YLF II.2级上升。.
摘要：
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