Table 1.
Characteristics of study population by ability to smell metabolites of asparagus in urine, 2010. Values are numbers (percentages) unless stated otherwise
| Characteristics | HPFS (n=2500) | NHS (n=4409) | |||
|---|---|---|---|---|---|
| Anosmic | Able to smell | Anosmic | Able to smell | ||
| Study sample | 1449 (58) | 1051 (42) | 2712 (62) | 1697 (38) | |
| Mean (SD) age (years) | 76 (8) | 75 (8) | 78 (6) | 76 (6) | |
| Smoking status: | |||||
| Current smoker | 50 (2) | 25 (1) | 221 (5) | 132 (3) | |
| Former smoker | 1100 (44) | 1100 (44) | 2160 (49) | 2160 (49) | |
| Never smoker | 1350 (54) | 1375 (55) | 2028 (46) | 2116 (48) | |
HPFS=Health Professionals Follow-up Study; NHS=Nurses’ Health Study.