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Table 1 Demographic characteristics

From: Metabolic profile changes in serum of migraine patients detected using 1H-NMR spectroscopy

Variable Lifetime migraine patients
(N = 289)
Controls
(N = 1360)
p-value Active migraine patientsb
(N = 150)
p-value
Age (years) 46.5 ± 12.1 48.7 ± 14.5 0.013c* 44.0 ± 11.4 <  0.001c*
Female sex (%) 220 (76.1) 673 (49.5) <  0.001d* 124 (82.7) <  0.001d*
BMI 26.9 ± 5.0 26.8 ± 4.6 0.934c 26.3 ± 4.9 0.219c
Smokinga (yes) (%) 129 (44.9) 481 (36.0) 0.006d* 71 (47.3) 0.008d*
MO patients 163 (56.4) 77 (51.3)
  1. Values are expressed as absolute values and percentage or mean ± SD. Numbers and proportions may not add up to total of 100 due to rounding or missing values; aDefined as currently cigarette smoking; bDefined as having at least one severe migraine attack in the last 12 months; cStudent’s t-test; dChi-square Test; *Significant p-values (p < 0.05). Missing values in lifetime migraine patients for BMI (n = 2), smoking status (n = 2) and in controls for BMI (n = 24) smoking status (n = 27). MO = migraine without aura, BMI =  body mass index