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Table 1 Comparison of age, body mass index (BMI), biochemical parameters, abilities of daily living (ADL) and olfactory and health characteristic in the study population

From: Low plasma tryptophan is associated with olfactory function in healthy elderly community dwellers in Japan

Variable Total Normal Trp group Low Trp group
Number (% of men) 144 (36.1) 128 (36.7) 16 (31.3)
Age, y (range) 73.7 ± 5.5 (65−93) 73.2 ± 5.3 (65−93) 77.5 ± 6.4 (66−91)*
BMI, kg/m2 (range) 23.4 ± 3.2 (16.7−33.6) 23.4 ± 3.0 (16.9−33.6) 23.7 ± 4.3 (16.7−31.7)
Serum albumin, g/dL (range) 4.4 ± 0.2 (3.7−4.9) 4.4 ± 0.2 (3.7−4.9) 4.4 ± 0.2 (4.0−4.9)
Hemoglobin, mg/dL (range) 13.9 ± 1.3 (10.1−16.7) 13.9 ± 1.3 (10.1−16.7) 13.5 ± 1.3 (11.5−15.9)
CRP, mg/L (range) 0.090 ± 0.10 (0.004−0.5) 0.095 ± 0.11 (0.007−0.5) 0.055 ± 0.04 (0.004−0.143)**
Low albumin, % (n) None None None
Anemia, % (n) 6.3 (9) 5.5 (7) 12.5 (2)
High CRP, % (n) None None None
ADL disability None None None
OE score 6.2 ± 2.9 (0−12) 6.5 ± 2.8 (0−12) 4.4 ± 2.4 (0−8)**
  1. OE score: the open essence score; None: no subjects. Data are expressed as mean ± SD. Significant: *P < 0.05, **P < 0.01 between normal Trp and low Trp group (Welch’s t-tests or Fisher’s exact test)