Borel MJ, Smith SM, Derr J, Beard JL., 1991, Am J Clin Nutr, 54, 729-35 , Day-to-day variation in iron-status indices in healthy men and women


Total Score


Parameter Score
1. Scale A
2. Study Population A
3. Samples A
4. Measurand A
5. Pre-Analytical A
6. Replicate Analysis B
7. Steady State C
8. Outlier Analysis B
9. Normality B
10. Variance Homogeneity C
12. CI A
13. No of Results C
14. Concentrations A
15. Total Score C7,10,13

Item Details

Parameter Score
Matrix Capillary plasma
Measurand Iron
Unit umol / L
Overall Analytical Principle Method Spectrophotometry; UV/VISIBLE
Number of Subjects 10
Number of Subjects included in BV estimation 10
Ethinicity Unknown
Age Mean / Median
Age Min
Age Max
Age SD
Number of Males 0
Number of Females 10
State of Well Being
Healthy (excl pregnant)
Study Duration Length 31
Study Duration Units Day
Sampling Intervals, e.g. X sample(s) per Interval Unit 1
Interval Units Day
Sampling Times Start Time: 07.30
End Time: 12.00
Number of Samples 31
Average Number of Samples Used for BV Estimation
Average Number of Replicates 3.0
Estimates of CVi 28.6
Calculated Confidence Intervals of CVi Lower: 26.46, Upper: 31.11
Estimates of CVg
Calculated Confidence Intervals of CVg Lower: , Upper:
Analytical CV 4.6
Calculated Confidence Intervals of Analytical CV Lower: 4.36, Upper: 4.87
Measurand Mean 15.6
Measurand Min
Measurand Max
Measurand SD