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Table 2 Summary information about risk factor levels between study baseline (1989–90) and end period (1997–9), by ethnic group. Percentage ascertainment and sample size presented, along with absolute and % difference.

From: Comparative levels and time trends in blood pressure, total cholesterol, Body Mass Index and smoking among Caucasian and South-Asian participants of a UK primary-care based cardiovascular risk factor screening programme

    Men Women
    1989–90 1997–9 Absolute difference % difference 1989–90 1997–9 Absolute difference % difference
Cholesterol Caucasian % ascertained 51.7% 50.5%    47.6% 43.8%   
   n 4,096 2,591    4,454 2,130   
   Mean (mmol/l) (95% CI) 6.168 (6.133 – 6.203) 5.628 (5.578 – 5.678) -0.54 -8.8% 6.034 (6.002–6.066) 5.409 (5.358 – 5.460) -0.625 -10.4%
  South-Asian % ascertained 40.9% 50.0%    41.8% 45.5%   
   n 38 55    28 35   
   Mean (mmol/l) (95% CI) 6.539 (6.209 – 6.869) 5.614 (5.293 – 5.935) -0.925 -14.1% 5.629 (5.181–6.077) 5.217 (4.935 – 5.499) -0.412 -7.3%
SBP Caucasian % ascertained 100% 100%    99.9% 99.9%   
   n 7,923 5,128    9,352 4,862   
   Mean (mmHg) (95% CI) 129.9 (129.6–130.2) 131.5 (131.0 – 132.0) 1.6 1.2% 126.3 (126.0 – 126.6) 125.6 (125.1 – 126.1) -0.7 -0.6%
  South-Asian % ascertained 100% 100%    100% 100%   
   n 93 110    67 77   
   Mean (mmHg) (95% CI) 125.7 (121.8–129.6) 124.8 (121.7–127.9) -0.9 -0.7% 128.9 (123.7 – 134.1) 125.1 (121.4 – 128.8) -3.8 -2.9%
DBP Caucasian % ascertained 100% 100%    100% 100%   
   n 7,924 5,130    9,357 4,865   
   Mean (mmHg) (95% CI) 80.4 (80.2 – 80.6) 81.8 (81.5 – 82.1) 1.4 1.7% 77.4 (77.2 – 77.6) 77.9 (77.6 – 78.2) 0.5 0.6%
  South-Asian % ascertained 100% 100%    100% 100%   
   n 93 110    67 77   
   Mean (mmHg) (95% CI) 78.1 (75.8 – 80.4) 79.3 (77.4 – 81.2) 1.2 1.5% 78.3 (76.0 – 80.6) 77.5 (75.4 – 79.6) -0.8 -1.0%
BMI Caucasian % ascertained 73.9% 88.4%    71.8% 86.9%   
   n 5,856 4,533    6,722 4,228   
   Mean (kg/m2) (95% CI) 25.84 (25.75 – 25.93) 26.65 (26.52 – 26.78) 0.81 3.1% 25.06 (24.95 – 25.17) 25.96 (25.77 – 26.15) 0.9 3.6%
  South-Asian % ascertained 63.4% 87.3%    65.7% 84.4%   
   n 59 96    44 84.4   
   Mean (kg/m2) (95% CI) 24.83 (24.1 – 25.6) 25.94 (25.1 – 26.8) 1.11 4.5% 26.16 (24.9 – 27.40) 26.42 (25.23 – 27.61) 0.26 1.0%
Smoking Caucasian % ascertained 74.6% 88.5%    72.6% 87.0%   
   n 5,911 4,542    6,793 4,231   
   Mean (% current smokers) (95% CI) 51.9% (50.5 – 53.2) 43.6% (41.9 – 45.3) -8.3 -16.0% 38.7% (37.5 – 39.9) 34.4% (32.7 – 36.1) -4.3 -11.1%
  South-Asian % ascertained 62.4% 86.4%    59.7% 80.5%   
   n 58 95    40 62   
   Mean (% current smokers) (95% CI) 25.9% (14.3 – 37.5) 27.4% (16.5 – 38.3) 1.5 5.8% 0% (0.0 – 0.0) 7% (0.0 – 14.0) 7 ...
  1. SBP: Systolic Blood Pressure, DBP: Diastolic Blood Pressure, BMI: Body Mass Index.