a weak trendp = 0.160
According to body mass index (BMI), a weak trend for higher IL-4 serum levels in overweight patients (61.80 ±40.0 pg/ml) compared to those with normal weight (2.81 ±0.58 pg/ml, p = 0.160) and underweight (10.30 ±5.59 pg/ml, p = 0.220) appeared ( Figure 3 ).