Trends of surgical treatment for spinal degenerative disease in China: a cohort of 37,897 inpatients from 2003 to 2016

Figures & data

Table 1 Surgical operations for spinal degenerative diseases, by patients’ sex and age

	Category	CDD n (%)	LDD n (%)	TDD n (%)
Sex	Female	6,724 (17.74)	9,313 (24.57)	448 (1.18)
	Male	12,073 (31.86)	8,806 (23.24)	533 (1.41)
	Chi-squared test, P-value <0.01
Age category	19–40	3,511 (9.26)	3,447 (9.10)	120 (0.32)
	41–65	12,407 (32.74)	11,888 (31.37)	733 (1.93)
	66+	2,879 (7.60)	2,784 (7.35)	128 (0.34)
	Chi-squared test, P-value <0.01
Total	SDD	18,797 (49.60)	18,119 (47.81)	981 (2.59)

Abbreviations: CDD, cervical degenerative diseases; LDD, lumbar degenerative diseases; SDD, spinal degenerative disease; TDD, thoracic degenerative diseases.

Figure 1 Number of spinal operations for SDD, by age group.

Abbreviations: CDD, cervical degenerative disease; LDD, lumbar degenerative disease; SDD, spinal degenerative disease; TDD, thoracic degenerative disease.

Figure 2 Proportion of SDD surgical operations performed on female patients, by the years of the study.

Abbreviation: SDD, spinal degenerative disease.

Figure 3 Mean age at surgery for SDD, by the year of the study.

Abbreviation: SDD, spinal degenerative disease.

Figure 4 Mean hospital stay for postoperative SDD patients, by the years of the study.

Abbreviation: SDD, spinal degenerative disease.

Figure 5 Number of observed, fitted, and predicted SDD surgical operations, by the year of the study.

Abbreviation: SDD, spinal degenerative disease.