Table 2.
Changes in motivation to reduce alcohol consumption and in consumption of alcohol in January and December
| Motivation to reduce alcohol consumption | ||||||
|---|---|---|---|---|---|---|
| Model 1a | Model 2a | Model 3b | ||||
| OR | 95 % CI | OR | 95 % CI | OR | 95 % CI | |
| Reference (other months) | 1 | - | 1 | - | 1 | - |
| January | 1.36 | 1.12 – 1.64 | 1.33 | 1.10–1.61 | 1.38 | 1.13–1.70 |
| December | 0.85 | 0.69–1.05 | 0.85 | 0.68–1.05 | ||
| Differential motivation sub-groups (model 3 plus interactions) | ||||||
| Interaction | P-valuec | |||||
| Age (6 categories) | 0.76 | |||||
| Sex (2 categories) | 0.53 | |||||
| Social class (5 categories) | 0.29 | |||||
| Occupation (7 categories) | 0.16 | |||||
| Education (9 categories) | 0.85 | |||||
| Alcohol consumption indicators | ||||||
| OR | 95 % CI | OR | 95 % CI | OR | 95 % CI | |
| Any alcohol consumptiond | ||||||
| reference (other months) | 1 | - | 1 | - | 1 | - |
| January | 0.95 | 0.88–1.04 | 0.94 | 0.86–1.02 | 0.92 | 0.84–1.01 |
| December | 0.88 | 0.81–0.96 | 0.86 | 0.79–0.95 | ||
| Average number of drinks per occasione | ||||||
| reference (other months) | 1 | - | 1 | - | 1 | - |
| January | 0.97 | 0.88–1.06 | 0.97 | 0.89–1.07 | 0.94 | 0.85–1.04 |
| December | 1.04 | 0.95–1.14 | 1.04 | 0.0.94–1.15 | ||
| Higher risk drinkingd | ||||||
| reference (other months) | 1 | - | 1 | - | 1 | - |
| January | 0.98 | 0.90–1.08 | 0.98 | 0.90–1.08 | 0.96 | 0.87–1.06 |
| December | 1.00 | 0.91–1.10 | 0.99 | 0.90–1.06 | ||
| Regular, at least weekly, binge drinking (>6 drinks per occasion)d | ||||||
| reference (other months) | 1 | - | 1 | - | 1 | - |
| January | 0.97 | 0.82–1.14 | 0.97 | 0.83–1.15 | 0.92 | 0.77–1.11 |
| December | 1.06 | 0.90–1.25 | 1.05 | 0.88–1.25 | ||
| Cumulative consumptionf | ||||||
| reference (other months) | 1 | - | 1 | - | 1 | - |
| January | 1.01 | 0.97–1.04 | 1.01 | 0.98–1.04 | 1.00 | 1.00–1.00 |
| December | 1.03 | 0.99–1.06 | 1.02 | 0.99–1.03 | ||
aalso adjusted for time to account for linear in/decreases over time
badjusted for time, age, sex, social class, education and occupation
cStatistically significant (P < 0.05) difference in motivation for any of the interactions was only observed for retired participants (OR = 2.78 (95 % CI 1.12–6.36))
dquasibinomial regression model
eordinal regression model
fgeneralized linear model