Table 2 Mixed effects regression results (95% CI) predicting the square root of volume (ml) of beer and cider per day (n = 12)

Intercept

134.02 (4.24)

31.59

< 0.001

125.70

142.33

Study period (ref: baseline)

3.14 (2.77)

1.13

0.257

-2.29

8.58

Day of the week_Tuesday (ref: Monday)

7.68 (4.32)

1.78

0.0760

-0.79

16.17

Day of the week_Wednesday (ref: Monday)

25.28 (4.51)

5.61

< 0.001**

16.44

34.12

Day of the week_Thursday (ref: Monday)

35.79 (4.92)

7.26

< 0.001**

26.13

45.45

Day of the week_Friday (ref: Monday)

73.06 (5.36)

13.63

< 0.001**

62.56

83.57

Day of the week_Saturday (ref: Monday)

51.55 (7.87)

6.55

< 0.001**

36.12

66.98

Day of the week_Sunday (ref: Monday)

11.65 (5.07)

2.29

0.0219*

1.71

21.59

Study day

0.26 (0.06)

4.56

< 0.001**

0.15

0.37

Total revenue

0.03 (0.00)

37.11

< 0.001**

0.04

0.04