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Table 2 Odds ratios of depressive symptoms by type of tea consumption among whole sample and subpopulations

From: Type of tea consumption and depressive symptoms in Chinese older adults

  Green tea
vs. No tea
Fermented tea
vs. No tea
Floral tea
vs. No tea
Whole samplea
 Model 1 0.53 (0.48–0.58) * 0.63 (0.56–0.70) * 0.49 (0.43–0.57) *
 Model 2 0.72 (0.65–0.80) * 0.79 (0.70–0.89) * 0.62 (0.53–0.72) *
 Model 3 0.80 (0.72–0.89) * 0.84 (0.74–0.95) * 0.69 (0.60–0.81) *
 Model 4 0.85 (0.76–0.95) * 0.87 (0.76–0.99) * 0.70 (0.59–0.82) *
Subpopulations based on model 4
By Sex
 Men 0.79 (0.69–0.92) * 0.85 (0.71–1.03) 0.77 (0.62–0.95) *
 Women 0.93 (0.79–1.10) 0.89 (0.74–1.08) 0.61 (0.48–0.78) *
By Age group
 Age < 80 years 0.87 (0.75–1.00) 0.81 (0.68–0.97) * 0.70 (0.56–0.87) *
 Age ≥ 80 years 0.82 (0.69–0.97) * 0.96 (0.79–1.18) 0.69 (0.54–0.88) *
By urban-rural residence
 Urban residency 0.82 (0.73–0.94) * 0.90 (0.76–1.07) 0.71 (0.58–0.88) *
 Rural residency 0.91 (0.76–1.08) 0.84 (0.68–1.04) 0.68 (0.52–0.89) *
By geographic region
 Northern China 0.84 (0.66–1.06) 1.09 (0.83–1.44) 0.74 (0.57–0.96) *
 Eastern China 0.90 (0.74–1.11) 1.11 (0.85–1.46) 0.48 (0.25–0.94) *
 Central China 0.83 (0.67–1.04) 0.76 (0.55–1.05) 0.70 (0.39–1.28)
 Southwestern China 0.60 (0.47–0.76) * 0.70 (0.56–0.87) * 0.88 (0.68–1.03)
  1. a Model 1 included types of tea consumption as the sole variable; Model 2 controlling for demographic and socioeconomic variables: age (continuous), sex, education, socioeconomic status, rural residence and geographical regions; Model 3 additionally controlling for psychosocial and behavioral variables: marital status, living arrangement, social and leisure activity index, smoking, alcohol drinking, BMI, regular dietary (vegetable/fruit/fish/nut) intake; Model 4 additionally for health variables: self-rated health, cognitive impairment, and medical illness, comorbidity, and ADL disability
  2. * P < 0.05