Table 1

Demographic data in the glyceryl trinitrate (GTN) and placebo groups

Placebo0.1% GTN0.2% GTN0.4% GTN
Number randomised51525146
Age (y) (mean (SD))43.9 (13)43 (13.6)43 (12.8)46.7 (13.1)
Sex
    Male (n (%))23 (45.1)25 (48.1)25 (48.1)18 (39.1)
    Female (n (%))28 (54.9)27 (51.9)26 (51.0)28 (60.9)
Ethnicity
    Caucasian ( n (%))50 (98)46 (88.5)49 (96.1)43 (93.5)
    Other (n (%)) 1 (2.0) 6 (11.5) 2 (3.9) 3 (6.5)
Site
    Anterior (n (%))12 (23.5) 5 (11.5)16 (32.4)12 (26.1)
    Posterior (n (%))38 (74.5)43 (82.7)33 (64.7)32 (69.6)
    Lateral (n (%)) 1 (2) 3 (5.7) 2 (4.0) 1 (2.2)