Table 3

Correlation between total IgA and tTG IgA (μ/mL) levels

Low IgANormal IgAAll patients
All age groups0.35 (N=873, p<0.001)0.50 (N=8470, p<0.001)0.54 (N=9429, p<0.001)
Age groups
 6–8 months−0.11 (N=19, p=0.59)0.48 (N=88, p<0.001)0.47 (N=111, p<0.001)
 9–11 months0.08 (N=41, p=0.56)0.35 (N=131, p<0.001)0.37 (N=172, p<0.001)
 1–2 years0.25 (N=155, p<0.001)0.42 (N=838, p<0.001)0.46 (N=1001, p<0.001)
 3–5 years−0.04 (N=82, p=0.70)0.43 (N=1228, p<0.001)0.46 (N=1322, p<0.001)
 6–8 years0.007 (N=76, p=0.94)0.46 (N=1271, p<0.001)0.49 (N=1361, p<0.001)
 9–11 years0.29 (N=168, p<0.001)0.39 (N=1420, p<0.001)0.47 (N=1600, p<0.001)
 12–17 years0.24 (N=332, p<0.001)0.45 (N=3494, p<0.001)0.50 (N=3862, p<0.001)
  • IgA, immunoglobulin A; tTG, tissue transglutaminase.