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Table 1 Baseline characteristics

From: Respiratory effects of acute milk consumption among asthmatic and non-asthmatic children: a randomized controlled study

   Asthmatic children Non-asthmatic children pvalue (asthmatic vs. non-asthmatic) [CI] pvalue
(soy vs. cow’s milk) [CI]
value (Asthmatic by Milk Interaction)e
Cow’s
Milk
(n= 22)
Soy milk
(n= 24)
All
(n= 46)
Cow’s milk
(n= 26)
Soy milk
(n= 24)
All (n= 50)
Demographics Age (years) 11.0
± 3.3
10.1
± 3.2
10.5
± 3.2
10.4
± 3.5
10.8
± 2.7
10.6
± 3.1
0.956 [-1.26-1.33] 0.702 [-1.045-1.545] 0.363
Sexa 45.4 62.5 54.3 34.0 54.1 44 0.311 0.066 0.234
BMI Z-score 0.04
± 0.9
0.39
± 1.4
0.23
± 0.1.2
-0.00
± 1.06
-0.13
± 1.07
0.05
±0.95
0.435 [-0.609-0.264] 0.278 [-0.675-0.196] 0.589
Parental beliefs milk increases mucus productionb 14 (63.6%) 12 (50%) 26 (56.5%) 6 (24%) 9 (37.5%) 15 (30.6) 0.011 0.906 0.041
milk effects child’s respiratory symptomsc 5 (22.7%) 7 (29.2%) 12 (26.1%) 0 1 (4.2%) 1 (2%) 0.001 (F) 0.552 (F) 0.006
Milk avoidance during respiratory symptoms (%) 3 (13.6%) 9 (37.5%) 12 (26.1%) 0 1 (4.2%) (2%) 0.001 (F) 0.07 (F) 0.001
Atopy Allergic rhinitis (%) 11 (50%) 17 (70.8%) 33 (71.7%) 2 (7.7%) 1 (4.2%) 3 (6%) < 0.0001 (F) 1 < 0.0001
Positive skin prick tests to inhaled allergens (%) 14 (63.6%) 15 (62.5%) 29 (63%) 3 (11.5%) 0 3 (6%) < 0.0001 (F) 0.665 < 0.0001
Atopic dermatitis (%) 5 (22.7%) 7 (29.2%) 12 (26.1%) 1 (3.8%) 1 (4.2%) 2 (4%) 0.003 (F) 0.563 0.021
  ACQ scores 0.930
± 1.033
1.144
± 1.116
1.032
± 1,067
     0.504  
Baseline spirometry and FeNO FEV1 t0d 90.5
± 17.0
96.8
± 13.7
93.8
± 15.5
101.0
± 12.8
100.8
± 11.3
100.9
± 11.7
0.013 [1.52–12.60] 0.353 [-8.4-3.0] 0.248
FEV/1FVC t0d 95.8
± 10.3
94.1
± 21.5
94.9
± 16.9
103.3
± 7.2
104
± 5.4
103.6
± 6.4
< 0.01 [3.36–13.97] 0.764 [-4.57-6.20] 0.646
FEF25-75 t0d 80.3
± 22.6
83
± 28.3
81.7
± 25.5
100.2
± 22.9
99.6
± 18.8
99.9
± 20.8
< 0.01 [8.82–27.62] 0.967 [-10.31-9.89] 0.724
FeNO (ppb) t0 40.6
± 37.6
45.6
± 41.0
43
± 38.9
13.2
± 13.0
14.7
± 7.3
13.9
± 10.4
   
Log FeNO 3.43
± 0.92
3.34
± 0.86
3.39
± 0.88
2.57
± 0.49
2.33
± 0.66
2.45
± 0.59
< 0.0001 [-1.251-0.626] 0.314 [-0.544-0.176] 0.859
  1. Values are given mean ± SD
  2. aPercentage of males, Chi-square
  3. bPercentage of parents believing milk increases mucus production
  4. cPercentage of parents believing milk effects their child’s respiratory symptoms
  5. dPercent predicted
  6. eTwo-way ANOVA for Asthmatic GroupXMilk Group interaction