Table 2

Association of tea consumption (in g/day) with the risk of ischaemic heart disease (IHD) among 487 375 participants*

Daily (g/day)
EndpointsNeverLess than daily0.1–2.02.1–3.03.1–5.0>5.0Allp for trend*
IHD (n)
  Person years1 197 1631 330 065343 163155 009192 500211 506902 178
  Cases10 013826624071112139814696386
 Cases/person-years (1/1000)8.366.217.017.177.266.957.08
 Model 11.000.97 (0.94 –1.00)0.94 (0.90 –0.99)0.93 (0.87 –1.00)0.96 (0.90 –1.02)0.97 (0.91 –1.03)0.95 (0.92 –0.99)0.698
 Model 21.000.98 (0.95 –1.02)0.94 (0.90 –0.99)0.94 (0.87 –1.01)0.95 (0.90 –1.01)0.95 (0.89 –1.01)0.95 (0.91 –0.98)0.793
 Model 31.000.97 (0.94 –1.00)0.92 (0.87 –0.97)0.91 (0.85 –0.98)0.92 (0.87 –0.98)0.91 (0.86 –0.97)0.92 (0.88 –0.95)0.465
MCE
  Person years1 224 5601 351 949349 206157 565196 065215 249918 085
  Cases (n)151811924332642562961249
 Cases/person-years (1/1000)1.240.881.241.681.311.381.36
 Model 11.000.88 (0.81 –0.96)0.84 (0.74 –0.95)0.97 (0.84 –1.13)0.87 (0.75 –1.00)1.02 (0.89 –1.17)0.90 (0.83 –1.00)0.028
 Model 21.000.94 (0.87 –1.02)0.86 (0.76 –0.98)1.02 (0.88 –1.19)0.90 (0.78 –1.04)1.02 (0.88 –1.17)0.93 (0.85 –1.03)0.138
 Model 31.000.92 (0.85 –1.00)0.83 (0.74 –0.95)0.99 (0.85 –1.15)0.87 (0.75 –1.00)0.97 (0.84 –1.11)0.90 (0.82 –0.99)0.218
  • Values are HRs (95% CIs) unless stated otherwise. Multivariate models were adjusted for: model 1: age (years) and sex (male or female); model 2: additionally included level of education (no formal school, primary school, middle school, high school, college, or university or higher); marital status (married, widowed, divorced or separated, or never married); alcohol consumption (never; occasional; former and having quitted ≤2, 3–4 or ≥5 years; weekly consuming 1–286, 287–426 or ≥427 g of alcohol for men or 1–146, 147–286 or ≥287 g of alcohol for women); smoking status (never; occasional; former and having quitted ≤2, 3–4, 5–9, 10–19 or ≥20 years; current smoking 1–4, 5–9, 10–14, 15–19, 20–24 or ≥25 cigarettes/day); physical activity (MET hour/day); intake frequencies of red meat, fruits and vegetables (daily, 4–6 days/week, 1–3 days/week, monthly, or rarely or never); family history heart attack (presence, absence or unknown); model 3: additionally included body mass index; prevalent hypertension and diabetes at baseline (presence or absence).

  • *Tests for linear trend were only conducted in daily consumers by modelling the amount of tea consumption (in g/day) as a variable in regression models.

  • MCE, major coronary events; MET, metabolic equivalent task.