Risk factors for thoracic-osteoporotic thoracic vertebral compression fractures during the normalized prevention and control period of COVID-19

Table 2 Comparison of fracture location and cause between the two groups, n (%)

Item	Observation group (n = 230)	Control group (n = 236)	χ2	P value
Fracture location
Thoracolumbar segment (T11-L2)	124 (53.9)	190 (80.5)	37.485	< 0.01a
Lumbar segment (L3-L5)	9 (3.9)	26 (11.0)	8.462	0.0036a
Thoracic segment (T1-T10)	97 (42.2)	20 (8.5)	70.348	< 0.01a
Cause of fracture
Fall at the same level	68 (29.6)	111 (47.0)	15.024	0.0001a
Fall from height	26 (11.3)	55 (23.3)	11.681	0.0006a
Sprain	26 (11.3)	31 (13.1)	0.363	0.546
Lifting heavy objects	22 (9.6)	24 (10.2)	0.0478	0.826
Non-cough causes of fracture	142	221
Cough	88 (38.2)	15 (6.4)	68.864	< 0.01a

^aP < 0.05 vs the control group.

T: Thoracic vertebrae; L: Lumbar vertebrae.