In an international comparative study Bloomfield et al. also reported no significant social inequalities in terms of educational level for binge drinking in women, but relatively consistent, although often not significant, gradients for males, with the lower and middle educational groups being more likely to be heavy episodic drinkers than the higher educated [ 32].
We performed ordinal logistic regression analyses stratified by history of stroke by combining the highest and the middle educational groups in order to improve statistical stability.
Applying population attributable risk calculations then implies that 41% of the deaths among women and 38% among men in the combined low and middle educational groups would be averted, resulting in preventing 2184 of the total of 4943 premature deaths observed in these strata.
In the small available sample (n = 107 mothers) the expected pattern of mean sum IQ scores on the Raven Progressive Matrices (Raven et al. 1998) is observed with the high educational group showing significant higher mean IQ (27.82) than the middle education group (22.79) and low education group (17.56), respectively (P = .002).002
Nyholm et al. [ 4] use a Swedish regional data set (partly the same as is used in the current study) and report that there is a slight tendency for men in the middle, and women in the highest, educational group to report more accurate values of weight and height.
Thirty five (64.8%) were from parents of high educational level, 18 (33.3%) were from the middle and only 1 (1.9%) was from the low educational level and so grouped with the middle educational level.
Estimates indeed suggest that hourly value added rises on average by respectively 1.28 and 0.19% following a 10 percentage point increase in the incidence of high- and middle-educated workers (at the expense of the reference educational group).
These 3 groups were: low (educational level 0 2), middle (educational level 3 4), and high (educational level 5 6) (http://www.unesco.org).unesco.org
For example, each individual in the lowest educational group is assigned a value corresponding to the proportion of the population with middle or high education, plus half of the proportion of the population with low education.
