Table 3

Association between study year and past 30-day depression

PeriodModel 1Model 2Model 3Model 4
PR (95% CI)PR (95% CI)PR (95% CI)PR (95% CI)
Men2006 vs 2004 (ref)0.74 (0.61 to 0.89)**0.75 (0.62 to 0.92)**0.76 (0.63 to 0.92)**0.77 (0.64 to 0.93)**
2008 vs 2006 (ref)1.33 (1.09 to 1.62)**1.28 (1.05 to 1.55)*1.38 (1.14 to 1.68)**1.34 (1.10 to 1.63)**
2010 vs 2008 (ref)1.36 (1.16 to 1.59)***1.36 (1.17 to 1.59)***1.21 (1.03 to 1.41)*1.22 (1.04 to 1.43)*
2012 vs 2010 (ref)0.85 (0.73 to 0.98)*0.85 (0.74 to 0.99)*0.90 (0.78 to 1.04)0.90 (0.78 to 1.04)
2014 vs 2012 (ref)0.87 (0.73 to 1.03)0.87 (0.74 to 1.04)0.90 (0.76 to 1.06)0.90 (0.76 to 1.07)
2016 vs 2014 (ref)0.94 (0.78 to 1.13)0.93 (0.77 to 1.12)0.92 (0.77 to 1.11)0.91 (0.76 to 1.10)
Women2006 vs 2004 (ref)0.86 (0.75 to 0.98)*0.86 (0.76 to 0.99)*0.85 (0.74 to 0.97)*0.85 (0.74 to 0.97)*
2008 vs 2006 (ref)1.15 (1.01 to 1.32)*1.16 (1.01 to 1.32)*1.18 (1.04 to 1.36)*1.19 (1.04 to 1.36)*
2010 vs 2008 (ref)1.25 (1.11 to 1.40)***1.24 (1.11 to 1.40)***1.22 (1.09 to 1.38)**1.22 (1.09 to 1.37)**
2012 vs 2010 (ref)0.85 (0.76 to 0.95)**0.85 (0.76 to 0.95)**0.86 (0.76 to 0.96)**0.85 (0.76 to 0.96)**
2014 vs 2012 (ref)0.89 (0.78 to 1.02)0.89 (0.78 to 1.01)0.91 (0.80 to 1.03)0.91 (0.80 to 1.03)
2016 vs 2014 (ref)1.01 (0.88 to 1.15)1.01 (0.88 to 1.16)0.98 (0.86 to 1.12)0.98 (0.86 to 1.12)
  • Model 1: unadjusted; model 2: adjusted for age, ethnicity and marital status; model 3: adjusted for education, income, economic activity; model 4: adjusted for age, ethnicity, marital status, education, income, economic activity.

  • Statistically significant difference: *p<0.05, **p<0.01, ***p<0.001.

  • PR, prevalence ratios.