Table 1.

Oxalate intake (mg/d) in men (HPFS), older women (NHS I), and younger women (NHS II)a

ParameterStone FormersNon–Stone FormersP
HPFS
    mean (SD)215 (117)214 (121)0.84
    median194191
    10th to 90th percentile range107 to 342106 to 329
NHS I
    mean (SD)184 (109)185 (112)0.94
    median166165
    10th to 90th percentile range86 to 29187 to 287
NHS II
    mean (SD)179 (121)183 (121)0.45
    median151158
    10th to 90th percentile range81 to 28386 to 293
  • a For illustrative purposes, oxalate values were derived from responses to the 1994 (men and older women) and 1995 (younger women) dietary questionnaires. Updated period-specific values were used for prospective analyses. Oxalate values were adjusted for total caloric intake. HPFS, Health Professionals Follow-up Study; NHS I, Nurses’ Health Study I; NHS II, Nurses’ Health Study II.