Calcium - ionised

Reference

Reference
Lacher DA, Hughes JP and Carroll MD, 2005, Clin Chem, 51, 450-2 , Estimate of biological variation of laboratory analytes based on the third National Health and Nutrition Examination Survey

Scoring

Total Score

C5,7,8,10,12,13

Parameter Score
1. Scale A
2. Study Population B
3. Samples A
4. Measurand B
5. Pre-Analytical C
6. Replicate Analysis B
7. Steady State C
8. Outlier Analysis C
9. Normality B
10. Variance Homogeneity C
11. ANOVA B
12. CI C
13. No of Results C
14. Concentrations A
15. Total Score C5,7,8,10,12,13
Comment

Item Details

Parameter Score
Matrix Serum
Measurand Calcium - ionised
Unit mmol / L
Overall Analytical Principle Method Unknown
Number of Subjects 14593
Number of Subjects included in BV estimation 14593
Ethinicity Hispanic or Latino
Age Mean / Median 42.9
Age Min
Age Max
Age SD
Number of Males
Number of Females
State of Well Being
Healthy (excl pregnant)
Diseases
Study Duration Length 72
Study Duration Units Month
Sampling Intervals, e.g. X sample(s) per Interval Unit
Interval Units Other
Sampling Times Start Time:
End Time:
Number of Samples 2
Average Number of Samples Used for BV Estimation 2.0
Average Number of Replicates 1.0
Estimates of CVi
Calculated Confidence Intervals of CVi Lower: , Upper:
Estimates of CVg 3.6
Calculated Confidence Intervals of CVg Lower: 0.00, Upper: 0.00
Analytical CV 1.4
Calculated Confidence Intervals of Analytical CV Lower: 1.96, Upper: 1.96
Measurand Mean 1.24
Measurand Min
Measurand Max
Measurand SD

Coding