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Table 1 Socio-demographic and Personal characteristics of the study participants, China, 2018–2020 (n = 57,501)

From: Prevalence and risk factors analysis for low back pain among occupational groups in key industries of China

Variables Frequency(n) Percentage (%)
Gender
 Men 37,240 64.8
 Women 20,261 35.2
Age (years)
 <25 12,085 21.0
 25- 26,139 45.5
 35- 12,301 21.4
 45- 5802 10.1
 55- 1174 2.0
Working age (years)
 <2 16,061 27.9
 2- 12,072 21.0
 4- 7299 12.7
 6- 9717 16.9
 8- 12,352 21.5
Education level
 Junior high school 15,369 26.7
 Senior high school 21,901 38.1
 University degree 19,231 33
 Graduate degree 1000 1.7
Marital status
 Single 20,997 36.5
 Married 35,343 61.5
 Divorced/Widowed 1161 2.0
Body mass index (BMI)
 <18.5 6006 10.4
 18.5- 39,328 68.4
 25- 12,167 21.2
Cigarette smoking
 No 36,527 63.5
 Occasionally 10,111 17.6
 Frequently 10,863 18.9