Calcium (Ca)

Reference

Reference
Lutsey P, Parrinello CM, Misialek JR et al, 2016, Clin Chem, 12, 1647-53 , Short-term variability of vitamin D-related biomarkers

Scoring

Total Score

C5,7,8,10,11,13

Parameter Score
1. Scale A
2. Study Population A
3. Samples A
4. Measurand A
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 C
12. CI A
13. No of Results C
14. Concentrations A
15. Total Score C5,7,8,10,11,13
Comment

Item Details

Parameter Score
Matrix Serum
Measurand Calcium (Ca)
Unit mg / dL
Overall Analytical Principle Method Spectrophotometry; Not specified
Number of Subjects 160
Number of Subjects included in BV estimation 160
Ethinicity Mixed
Age Mean / Median 76.0
Age Min 68.0
Age Max 88.0
Age SD
Number of Males 64
Number of Females 96
State of Well Being
Non-healthy (excl pregnant)
Diseases
Study Duration Length 6
Study Duration Units Week
Sampling Intervals, e.g. X sample(s) per Interval Unit 1
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
Estimates of CVi 2.0
Calculated Confidence Intervals of CVi Lower: 0.30, Upper: 2.62
Estimates of CVg 3.57
Calculated Confidence Intervals of CVg Lower: 3.06, Upper: 4.16
Analytical CV 2.3
Calculated Confidence Intervals of Analytical CV Lower: 1.85, Upper: 3.04
Measurand Mean 9.3
Measurand Min
Measurand Max
Measurand SD 0.4

Coding