Calcium (Ca)

Included in meta analysis

Reference

Reference
Hölzel WGE, 1987, Clin Chem, 33, 670-3 , Intra-individual variation of some analytes in serum of patients with chronic renal failure

Scoring

Total Score

C8,13

Parameter Score
1. Scale A
2. Study Population A
3. Samples A
4. Measurand A
5. Pre-Analytical A
6. Replicate Analysis A
7. Steady State A
8. Outlier Analysis C
9. Normality A
10. Variance Homogeneity A
11. ANOVA B
12. CI A
13. No of Results C
14. Concentrations A
15. Total Score C8,13
Comment

Item Details

Parameter Score
Matrix Serum
Measurand Calcium (Ca)
Unit mmol / L
Overall Analytical Principle Method Flame photometry
Number of Subjects 14
Number of Subjects included in BV estimation 14
Ethinicity Caucasian
Age Mean / Median 41.8
Age Min 31.0
Age Max 50.0
Age SD
Number of Males
Number of Females 14
State of Well Being
Healthy (excl pregnant)
Diseases
Study Duration Length 12
Study Duration Units Week
Sampling Intervals, e.g. X sample(s) per Interval Unit
Interval Units Other
Sampling Times Start Time: 06.30
End Time: 08.00
Number of Samples 8
Average Number of Samples Used for BV Estimation 8.0
Average Number of Replicates
Estimates of CVi 1.2
Calculated Confidence Intervals of CVi Lower: 0.00, Upper: 1.55
Estimates of CVg
Calculated Confidence Intervals of CVg Lower: , Upper:
Analytical CV 1.0
Calculated Confidence Intervals of Analytical CV Lower: 0.71, Upper: 1.70
Measurand Mean 2.29
Measurand Min
Measurand Max
Measurand SD

Coding