Number of participants in each age group, for each class of measure analyzed, separately for longitudinal and baseline analyses.

Clin  =  clinical measure: ADAS-Cog, CDR-SB, MMSE. CSF data were obtained at baseline for approximately half the study sample. Note that in each age bracket, age extends up to, but does not include, the highest age indicated (age groups do not overlap).

临床指标（clinical measure）包括阿尔茨海默病评估量表-认知子量表（ADAS-Cog）、临床痴呆评定量表-总分（CDR-SB）以及简易精神状态检查（MMSE）。约半数研究样本在基线时采集了脑脊液（cerebrospinal fluid, CSF）数据。请注意：每个年龄组的年龄范围均覆盖至所标注的最高年龄，但不包含该最高年龄，即各年龄组之间无重叠。