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Table 1 Subject characteristics

From: Effects of milk containing only A2 beta casein versus milk containing both A1 and A2 beta casein proteins on gastrointestinal physiology, symptoms of discomfort, and cognitive behavior of people with self-reported intolerance to traditional cows’ milk

Study group Sequence 1
(n = 22)a
Sequence 2
(n = 23)b
All subjects P-valuec
Gender Male 10 (45.5 %) 11 (47.8 %) 21 (46.7 %)
Female 12 (54.5 %) 12 (52.2 %) 24 (53.3 %)
Age (year) 45.7 (12.3) 47.5 (15.6) 46.6 (14.0) 0.664
Weight (kg) 72.4 (19.9) 66.7 (14.3) 69.5 (17.3) 0.272
Height (cm) 167.5 (9.4) 166.4 (8.0) 166.9 (8.6) 0.695
BMI (kg/m2) 25.4 (4.6) 24.0 3.7 24.6 4.2 0.226
Body temperature (°C) 36.9 (0.1) 36.8 (0.2) 36.8 (0.2) 0.207
DBP (mmHg) 76.1 (5.2) 75.5 (6.5) 75.8 (5.8) 0.748
SBP (mmHg) 124.6 (6.7) 121.2 (8.8) 122.9 (7.9) 0.145
Lactose intolerant 8 (36.4 %) 15 (65.2 %) 23 (51.1 %)  
  1. aSequence 1: A1/A2 → A2
  2. bSequence 2: A2 → A1/A2
  3. cANOVA
  4. BMI body mass index; DBP diastolic blood pressure; SBP systolic blood pressure