"Period before hospitalization";"Children (n=25)";"Adults (n=65)";"Total (n=90)";p-value
n;%;n;%;n;%;
"≤3 days";16;64%;28;43.1%;44;48.9%;"χ
              2=5.009  p=0.082"
"4-7 days";8;32%;23;35.4%;31;34.4%
">7 days";1;4%;14;21.5%;15;16.7%