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Table 2 Descriptive data for serum transthyretin (g/L)

From: Mobile and cordless telephones, serum transthyretin and the blood-cerebrospinal fluid barrier: a cross-sectional study

  n Mean Median Min Max p
Transthyretin, total 313 0.277 0.270 0.170 0.480 -
Age (cut-point at median)       
   ≤ 47 years 158 0.271 0.260 0.170 0.480 0.02
   > 47 years 155 0.284 0.280 0.180 0.470  
Gender       
   Men 133 0.307 0.300 0.180 0.480 <0.0001
   Women 180 0.256 0.250 0.170 0.400  
Time (hour) when blood was drawn       
   06:00–12:00 65 0.286 0.270 0.170 0.420 0.12
   12:01–16:00 248 0.275 0.270 0.170 0.480  
Day when blood was drawn       
   Mon-Thur 174 0.276 0.260 0.170 0.440 0.77
   Fri-Sun 139 0.279 0.270 0.170 0.480  
Month when blood was drawn       
   March-June 228 0.278 0.270 0.170 0.480 0.94
   July-October 85 0.277 0.270 0.170 0.400  
  1. The Wilcoxon rank-sum was used to calculate p-values.