Table 5.

Total-body stores of vitamin A in subjects before and after intervention (Median values, mean values and standard deviations)

		Before intervention (mmol)			After intervention (mmol)
	n	Median	Mean	sd	Median	Mean	sd
Group 1	52	0·277	0·316	0·232	0·344	0·415	0·321
Group 2	53	0·277	0·345	0·239	0·437	0·632**	0·471
Group 3	59	0·287	0·340	0·222	0·566	0·807**	0·681

Group 1, control group; group 2, group given food with 2 g added spirulina, 5 d/week for 10 weeks; group 3, group given food with 4 g added spirulina, 5 d/week for 10 weeks.

** Mean value was significantly different from that at baseline (P < 0·01; Student's paired t test).