Table 3: Skin-prick tests data for D. pteronyssinus, D. farinae and B. tropicalis with histamine (positive control) and saline (negative control) of patients from the magnesium group or placebo control group during the study period (mean and standard deviation)

From: Oral magnesium supplementation in asthmatic children: a double-blind randomized placebo-controlled trial

 Magnesium group (n= 18)Placebo-control group (n= 19)
Saline before (mm)0000
Saline after (mm)0000
Histamine before (mm)5.942.077.472.27
Histamine after (mm)5.611.657.791.90
D. pteronyssinus before (mm)5.503.377.054.09
D. pteronyssinus after (mm)3.722.568.003.70
D. farinae before (mm)4.613.505.322.56
D. farinae after (mm)
B. tropicalis before (mm)6.064.656.113.65
B. tropicalis after (mm)3.893.666.474.22
  1. Abbreviations: B. tropicalis, Blomia tropicalis; D. pteronyssinus, Dermatophagoides pteronyssinus; D. farinae, Dermatophagoides farinae; s.d., standard deviation.