Table 1

Average ratings on 10 questions1-150 on smell before and after 1 minute of exposure to propylene glycol mist (n=27)

Type of rating 10 min before exposure mean (SD) 10 min after exposure mean (SD) Two tailed p value1-151
Ocular irritation5 (10)14 (13)<0.001
Nasal irritation7 (10)10 (11)0.17
Throat irritation7 (9)20 (14)<0.001
Difficulty in breathing3 (4)7 (10)0.048
Solvent smell3 (6)4 (7)0.43
Headache4 (6)4 (6)0.46
Fatigue6 (10)5 (8)0.40
Nausea3 (3)2 (3)0.33
Dizziness2 (3)5 (7)0.10
Intoxication2 (3)4 (6)0.24
  • 1-150 Visual analogue rating scales 0–100 mm (Nihlenet al 33).

  • 1-151 Calculated by Students t test for paired comparison.