Effect of tonsillectomy and adenoidectomy (T&A on overnight oximetry (SpO2) of children with sickle cell disease (n=19)

Before T&AAfter T&Ap-value
Overnight SpO2 %#93.0±3.695.3±2.80.001
Nadir overnight SpO2 %#83.0±7.188±4.10.004
% time SpO2 <90%0.3 (0–6)0.1 (0–2)0.107
Nocturnal 3% ODI5.7 (3.6–7.8)1.8 (1.2–6.0)0.003

Data are presented as mean±sd or median (interquartile range), unless otherwise stated. #: Passed the normality test: analysed by paired t-test; : not passed the normality test: analysed by Wilcoxon matched-pairs signed-rank test. ODI: oxygen desaturation index.