Table 4.

Geometric mean titres of IgA and IgG antibodies to Shigella sonnei, Shigella flexneri, Cryptosporidium parvum and Escherichia coli O157:H7 in the three communities of different socioeconomic status

HSL, High standard of living; MSL, medium standard of living; LSL, low standard of living.

^*Duncan different letters (A, B and C) stand for statistical differences among the three communities.

^†P value, t test difference between genders.

^‡P value, ANOVA F test difference among communities.