Table 2.
Study outcomes and covariates (mean, SD) during each 14‐day intervention period according to intervention order (n = 166).
| Bottle size phase | ||||||
|---|---|---|---|---|---|---|
| 50 cl | 75 cl | |||||
| 50 cl first | 75 cl first | Overall | 50 cl first | 75 cl first | Overall | |
| Primary outcome | ||||||
| Volume of study wine consumed (ml) | 4262.5 (2054.9) | 4147.9 (2076.7) | 4205.9 (2060.2) | 4281.5 (2253.5) | 4478.0 (1981.0) | 4378.6 (2119.1) |
| Secondary outcome | ||||||
| Mean number of days taken to consume 1.5 litres of study wine | 5.44 (2.60) | 4.96 (2.10) | 5.21 (2.37) | 4.67 (2.88) | 4.60 (2.23) | 4.63 (2.57) |
| Covariates | ||||||
| (i) Non‐study wine consumption (ml) | 212.5 (838.5) | 143.3 (511.3) | 178.3 (695.1) | 81.5 (431.9) | 291.2 (787.4) | 185.1 (693.8) |
| (ii) Guest consumption (ml) | 472.9 (656.4) | 463.7 (918.1) | 468.4 (794.1) | 354.5 (570.0) | 560.9 (910.3) | 456.4 (762.1) |
| (iii) Out‐of‐home consumption (ml) | 785.1 (1215.9) | 615.1 (936.9) | 701.1 (1087.1) | 690.9 (1272.1) | 553.8 (743.1) | 622.8 (1042.4) |
| (iv) Number of wine drinkers | 1.86 (0.75) | 1.94 (0.63) | 1.90 (0.71) | 1.86 (0.75) | 1.94 (0.63) | 1.90 (0.72) |
| (v) ‘Usual behaviour’ period duration (days) | 9.83 (6.41) | 9.95 (6.76) | 9.89 (6.56) | 9.83 (6.41) | 9.95 (6.76) | 9.90 (6.57) |
| (vi) Baseline consumption (ml) | 1950.9 (726.5) | 1929.9 (543.6) | 1940.5 (640.9) | 1950.9 (726.5) | 1929.88 (543.6) | 1940.5 (640.9) |
| (viii) Price (£) per litre | 8.75 (1.44) | 8.50 (1.27) | 8.62 (1.36) | 8.19 (1.53) | 7.9026 (1.49) | 8.04 (1.52) |
| (ix) Mitigating factors | −0.19 (1.06) | −0.20 (1.20) | −0.19 (1.13) | −0.20 (1.00) | 0.13 (1.01) | −0.04 (1.02) |
SD = standard deviation.