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. 2000 May 27;320(7247):1446–1447. doi: 10.1136/bmj.320.7247.1446

Table.

Characteristics of patient groups and thresholds of numbers needed to treat chosen for taking antihypertensive drugs

Variable Members of the public (n=100) Practice nurses (n=39) General practitioners (n=39) Consultant physicians (n=39)
No (%) responding 58 (58) 32 (82) 30 (77) 29 (74)
Age group by No (%):
  <40 years 14 (25) 15 (47) (47)  7 (24)
 41-65 years 25 (45) 16 (50) (53) 22 (76)
 >65 years 17 (30) 1 (3)  (0) 0 (0)
Ratio of men:women (%) 42:58 3:97 70:30 86:14
Odds ratio (95% CI) adjusted for age and sex, with consultants as reference group 0.12 (0.03 to 0.42) 0.08 (0.02 to 0.35) 0.27 (0.08 to 0.96)
Median NNT threshold chosen (interquartile range):
  <40 years 50 33 50 or 100 250
 41-65 years 12 12 or 33 33  50
 >65 years 50 33
 Men 50 33 50 100
 Women 33 33 50 250
 All respondents 33 (12-250) 33 (<12-50) 50 (33-100) 100 (50-250)