Table 3.

Gender differences in RII in obesity and their temporal trends

Relative index of inequality
*Gender differences	SHeS 1995	SHeS 1998	SHeS 2003	SHeS 2010/2011	†Time trends
Education	0.98 (0.60, 1.59) P=0.932	0.82 (0.55, 1.25) P=0.362	0.89 (0.60, 1.33) P=0.577	0.88 (0.69, 1.13) P=0.322	0.98 (0.84, 1.15) P=0.832
Occupational social class	0.52 (0.35, 0.75) P=0.001	0.77 (0.55, 1.08) P=0.126	0.76 (0.54, 1.06) P=0.106	0.63 (0.50, 0.78) p<0.001	1.02 (0.90, 1.17) P=0.722
Household income	−	−	0.45 (0.31, 0.64) p<0.001	0.59 (0.47, 0.76) p<0.001	1.34 (0.87, 2.06) P=0.191
SEP score	−	−	0.56 (0.39, 0.81) P=0.002	0.59 (0.46, 0.75) p<0.001	1.05 (0.68, 1.62) P=0.830

*Gender differences: result from the two-way interaction term—Ridit score* gender.

†Time trends: result from the three-way interaction term—Ridit score* gender* survey.