BACKGROUND The PASS-20 is a general measure of pain-related anxiety and fear. The aim of the present study was to adapt the questionnaire for use in Spanish-speaking populations. METHODS Sample 1 comprised 216 individuals with chronic spinal pain (114 women and 102 men); sample 2 comprised 85 individuals with acute spinal pain (62 women and 23 men). The dimensionality of the PASS-20-SV items was evaluated using Exploratory Factor Analysis and an optimal implementation of Parallel Analysis (robust maximum likelihood). Data from sample 1 was used to analyse internal consistency and convergent validity. Estimated test-retest stability and predictive validity were based on data from the sample 2 participants, who completed the first administration (T1) and a second administration (T2, 6 months later). RESULTS The PASS-20-SV comprises two factors: pain-related anxiety and apprehension, and pain-related fear and avoidance. It has good to excellent reliability and adequate test-retest stability. The results support its convergent and predictive validity. CONCLUSIONS The Spanish Version of the PASS-20 is a valid, reliable measure of pain-related anxiety and pain-related fear in Spanish-speaking patients.

中文翻译：

---

西班牙语版本的疼痛焦虑症状量表20（PASS-20-SV）的心理测量特性。

背景技术PASS-20是疼痛相关的焦虑和恐惧的一般量度。本研究的目的是使调查表适合讲西班牙语的人群使用。方法样本1包括216名慢性脊柱痛患者（114名女性和102名男性）；样本2包括85位急性脊柱疼痛患者（62位女性和23位男性）。使用探索性因子分析和并行分析的最佳实现方式（鲁棒最大似然）评估了PASS-20-SV项目的尺寸。来自样本1的数据用于分析内部一致性和收敛效度。估计的重测稳定性和预测有效性是基于样本2参与者的数据，这些参与者完成了第一次给药（T1）和第二次给药（T2，6个月后）。结果PASS-20-SV包含两个因素：疼痛相关的焦虑和忧虑，以及疼痛相关的恐惧和避免。它具有出色的可靠性和足够的重测稳定性。结果支持其收敛性和预测有效性。结论西班牙语版本的PASS-20是一种有效，可靠的量度西班牙语使用者的疼痛相关焦虑和疼痛相关恐惧的方法。