Table 4 Stratified regression coefficients (95% confidence interval) for DBP change according to the total tea, green tea and black tea consumption categories (β coefficients and 95% confidence intervals) among Chinese adults (n= 1109) ^a

334

0.55(-3.55 to 4.65)

0.03(-5.08 to 5.13)

0.91

0.32

768

-1.72(-4.03 to 0.60)

-2.94(-5.50 to -0.37)

0.02

443

-1.24(-4.57 to 2.08)

-2.29(-6.06 to 1.48)

0.20

0.64

659

-0.93(-3.43 to 1.57)

-2.78(-5.68 to 0.12)

0.06

469

-1.92(-4.58 to 0.74)

-2.88(-5.69 to -0.08)

0.03

0.56

633

0.06(-3.28 to 3.4)

-0.49(-5.04 to 4.07)

0.88

310

0.76(-2.43 to 3.94)

-0.57(-3.86 to 2.71)

0.81

0.03

792

-2.43(-5.15 to 0.29)

-4.65(-7.98 to -1.32)

<0.01

`

281

0.61(-2.88 to 4.1)

-0.9(-4.77 to 2.96)

0.76

0.52

805

-1.25(-3.86 to 1.35)

-2.84(-5.77 to 0.08)

0.047

334

-0.2(-4.18 to 3.77)

2.05(-4.04 to 8.15)

0.65

0.09

768

-1.88(-4.29 to 0.52)

-5.41(-8.54 to -2.28)

<0.01

443

-1.64(-4.94 to 1.66)

-1.73(-6.25 to 2.79)

0.289

0.64

659

-0.9(-3.52 to 1.72)

-5.13(-8.67 to -1.58)

0.01

469

-1.81(-4.44 to 0.82)

-4.13(-7.39 to -0.87)

<0.01

0.85

633

-1.09(-4.62 to 2.43)

-1.69(-7.66 to 4.27)

0.43

310

0.82(-2.36 to 4)

-1.46(-5.17 to 2.25)

0.61

<0.01

792

-3.43(-6.19 to -0.68)

-7.6(-11.96 to -3.24)

<0.01

281

-1.03(-4.7 to 2.64)

-3.52(-7.87 to 0.83)

0.12

0.91

805

-1.18(-3.77 to 1.4)

-4.13(-7.76 to -0.5)

0.03

334

-8.16(-15.99 to -0.32)

7.35(-2.22 to 16.93)

0.78

0.77

768

-1.55(-4.96 to 1.85)

2.44(-1.32 to 6.2)

0.48

443

-2.45(-8.44 to 3.55)

-1.73(-7.76 to 4.3)

0.41

0.70

659

-2.56(-6.15 to 1.02)

5.01(0.73 to 9.29)

0.20

469

-2.68(-6.58 to 1.22)

2.45(-1.66 to 6.56)

0.62

0.32

633

-1.02(-6.66 to 4.61)

7.25(-0.3 to 14.81)

0.17

310

-2.61(-7.1 to 1.89)

3.31(-1.44 to 8.06)

0.46

0.95

792

-1.85(-6.36 to 2.65)

2.49(-2.88 to 7.86)

0.70

281

1.75(-3.56 to 7.05)

5.01(-0.85 to 10.87)

0.09

0.41

805

-3.57(-7.72 to 0.57)

2.52(-1.98 to 7.02)

0.83