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Table 2 Characteristics of the LBP patients

From: Vitamin D levels appear to be normal in Danish patients attending secondary care for low back pain and a weak positive correlation between serum level Vitamin D and Modic changes was demonstrated: a cross-sectional cohort study of consecutive patients with non-specific low back pain

Descriptive statistics Values
Age (years) n = 152 44.6 ± 11.2 (19–64)
Mean ± SD (range)
Gender n = 152 ♀ 100 (66%)
Female ♀/male ♂ (%) ♂ 52 (34%)
Body Mass Index, BMI n = 138 26.0 ± 4.5 (18.9-38.9)
Mean ± SD (range)
LBP a n = 146 6.0 ± 2.0 (0.0-10)
Mean ± SD (range)
Leg pain a n = 146 4.1 ± 3.0 (0.0-9.7)
Mean ± SD (range)
Previous LBP episodes n = 143 107 (74.8%)
Frequency (%)
Pain days per week: (frequency (%)) n = 144  
Less than 1 day per week 2 (1.4%)
1-2 days per week 4 (2.8%)
3-4 days per week 13 (9.0%)
5-6 days per week 12 (8.3%)
Every day 113 (78.5%)
Weakness in legs n = 141 66 (46.8%)
Frequency (%)
Paresthesia in legs n = 142 93 (65.5%)
Frequency (%)
Widespread pain n = 143  
Frequency (%)  
≤ 5 pain areas 85 (59.4%)
> 5 pain areas 58 (40,6%)
Vitamin D level (nmol/L) n = 152 58.8 ± 26.2 (11–146)
Mean ± SD (range)
Modic changes (frequency (%)) n = 152  
No Modic 112 (73.7%)
Modic Type 1 18 (11.8%)
Modic Type 2 13 (8.6%)
Modic Types 1 + 2 9 (5.9%)
  1. a Pain intensity on LBP and leg pain is an average (0–10 numerical rating scale) based on pain now (0–10), worst pain in the last 2 weeks (0–10) and average pain last 2 weeks (0–10) [25].