Skip to main content
. 2010 Jul 15;138(5):1116–1124. doi: 10.1378/chest.10-0187

Table 5.

—AAT Values and AAT Phenotype Combinations of Study Cohort by AAT Deficiency Category and AAT Serum Level

AAT Serum Level, μmol/L
AAT Deficiency Category Normal Low
Normal 24.55 ± 2.81 18.60 ± 1.01
 Phenotype combination 75 PiMM 4 PiMM
Mild deficiency 21.70 ± 0.28 17.34 ± 1.85
 Phenotype combination 2 PiMS 4 PiMS, 1 PiSS
Moderate deficiency 14.18 ± 3.25ab
 Phenotype combination 3 PiMZ, 1 PiSZ

Data are presented as mean ± SD, unless otherwise indicated. See Table 1 and 4 legends for expansion of abbreviations.

a

P < .001 comparing mean serum AAT levels among AAT phenotype categories, Kruskal-Wallis test.

b

P < .001 comparing AAT deficiency phenotype combinations among workers with low vs normal AAT serum levels, Mann-Whitney U.