Table 2.

Baseline group measurements

	Belladonna group (N = 101)	Placebo group (N = 105)
Baseline measure	Mean	SD	Mean	SD
Age (years)	22.5	3.80	22.0	2.20
Sex (F : M)	78 : 23		86 : 19
	(77.2% : 22.8%)		(81.9% : 18.1%)
Body mass index	22.2	2.65	22.7	3.20
Contraceptive pill users (%)	42.6		45.7
Attitude to complementary medicine*	41.6	7.02	41.3	7.65
Smokers (%)	13.9		12.4
Cigarette consumption, no. per day	5.8	4.00	5.0	2.24
Daily caffeine intake (cups)	2.3	2.02	2.34	2.35
Weekly alcohol intake (units†)	8.4	7.01	9.3	7.45
Subjective health score‡	2.1	0.66	2.2	0.81

^*The Attitudes to Complementary Medicine Questionnaire which gives an overall single score ranging from 14 to 84, with a lower score indicating a pro CAM attitude.

^†One unit of alcohol is equivalent to half pint of beer lager or one glass of wine or one measure of spirit.

^‡Assessed by a six-point Likert scale where 1 = excellent health and 6 = very poor health.