Table 4. Associations of tea consumption with blood pressure progression after excluding hypertension cases within the first year of follow-up.

Tea consumption	Total number	Number of cases	OR (95% CI)^*	OR (95% CI)^**
^Refers to ORs (95% CIs) were adjusted for age, sex, body mass index, region, and baseline systolic blood pressure. ^Refers to ORs (95% CIs) were further adjusted for smoking, drinking, physical activity, education level, fasting blood glucose, total cholesterol, and family history of hypertension. ^**Refers to someone who had drank tea ≥ 3 times/week for at least six months. CI: confidence interval; OR: odds ratio.
Tea drinking frequency
Non-habitual tea drinkers	28,799	13,512	Reference	Reference
Habitual tea drinkers^***	9,931	3,962	0.84 (0.79–0.88)	0.83 (0.79–0.88)
Tea consumption amount
Non-habitual tea drinkers	28,799	13,512	Reference	Reference
50 g/month	2,199	943	0.92 (0.84–1.00)	0.90 (0.82–0.99)
100 g/month	3,267	1,305	0.88 (0.82–0.95)	0.87 (0.80–0.94)
≥ 150 g/month	4,465	1,714	0.76 (0.71–0.82)	0.77 (0.72–0.83)
P_trend	—	—	< 0.001	< 0.001