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Table 2

Mean value (SD) of each demographic characteristics and measurements in the absence and presence of disc degeneration in the cervical, thoracic, and lumbar region, respectively.
 CervicalThoracicLumbar
 Presence of DDAbsence of DDp-valuePresence of DDAbsence of DDp-valuePresence of DDAbsence of DDp-value
No. of participants59233657835083989
Demographic characteristics and measurements
Age (years)70.8 (11.3)61.4 (11.7)0.000171.7 (10.3)60.1 (11.9)0.000167.7 (11.8)64.0 (16.0)0.007
Body mass index (kg/m2)23.5 (3.6)23.0 (3.6)0.055223.6 (3.7)22.9 (3.3)0.005823.4 (3.6)22.2 (3.3)0.0028
Systolic BP, mmHg141.3 (19.1)136.6 (19.9)0.0004142.5 (18.8)134.7 (19.8)0.0001140.0 (19.8)134.9 (16.9)0.0188
Diastolic BP, mmHg75.5 (11.2)76.9 (12.1)0.066375.6 (11.2)76.7 (12.0)0.170776.1 (11.5)74.9 (12.1)0.3362
Serum levels of HDL-C, mg/dl61.8 (15.2)65.7 (17.5)0.000461.9 (15.4)65.3 (17.3)0.002263.2 (16.1)63.5 (17.3)0.853
Serum levels of HbA1c, %5.3 (0.7)5.2 (0.7)0.00115.4 (0.8)5.1 (0.5)0.00015.3 (0.7)5.1 (0.5)0.0067

DD = disc degeneration, BMI = body mass index, BP = blood pressure, HDL-C = high density lipoprotein in cholesterol, HbA1c = hemoglobin A1c, SD = standard deviation

Differences between the groups depending on the presence or absence of DD were tested using a variance analysis.

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