修饰哪个？

Axial SpA typically presents in early adulthood with low back and buttock pain for greater than 3 months, accompanied by morning stiffness (due to sacroiliitis) for at least 1 hour, that improves with exercise [19]. Since back pain is a rather ubiquitous presenting symptom in the general population, it is important for clinicians to identify and distinguish inflammatory back pain symptoms from non-inflammatory back pain typically exhibiting at least four of the five clinical features (Table 16.3). Spinal stiffness and loss of spinal mobility begin in the lumbar spine and characteristically ascend to the spine over the course of years, sometimes involving the thoracic and cervical regions of the spine late in the disease course.

中轴型脊柱关节炎多见于青少年，早期症状是持续3个月以上的、每天至少1小时的腰骶部和臀部疼痛伴晨僵（由于骶髂关节炎），活动后症状改善^[19]。由于在普通人群中腰背痛是一种相当普遍，临床医师必须从非炎性腰背痛中去鉴别炎性腰背痛，见表16.3。炎性腰背痛需要满足上述5项临床特征中的至少4项。脊柱强直和脊柱功能活动的丧失始于腰椎，随着病情进展，整个脊柱可自下而上发生强直，病程晚期甚至可能累及胸椎和颈椎。

exhibiting at least four of the five clinical features 从语法上应该修饰“inflammatory back pain”还是“non-inflammatory back pain ”，感觉应该就近修饰“non-inflammatory back pain ”

但下面的表格却是修饰“inflammatory back pain ”