Urea

Included in meta analysis

Reference

Reference
Gowans EMS, Fraser G., 1987, Clin Chem, 33, 717 , Longer-term biological vari ation of commonly analyzed serum constituent

Scoring

Total Score

C8,10,13

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 B
8. Outlier Analysis C
9. Normality B
10. Variance Homogeneity C
11. ANOVA B
12. CI A
13. No of Results C
14. Concentrations A
15. Total Score C8,10,13
Comment

Item Details

Parameter Score
Matrix Serum
Measurand Urea
Unit mmol / L
Overall Analytical Principle Method Unknown
Number of Subjects 15
Number of Subjects included in BV estimation 15
Ethinicity Unknown
Age Mean / Median
Age Min 20.0
Age Max 53.0
Age SD
Number of Males 7
Number of Females 8
State of Well Being
Healthy (excl pregnant)
Diseases
Study Duration Length 4
Study Duration Units Month
Sampling Intervals, e.g. X sample(s) per Interval Unit 1
Interval Units Month
Sampling Times Start Time: 09:00
End Time: 10:00
Number of Samples 10
Average Number of Samples Used for BV Estimation 10.0
Average Number of Replicates 2.0
Estimates of CVi 13.9
Calculated Confidence Intervals of CVi Lower: 12.40, Upper: 15.81
Estimates of CVg 13.8
Calculated Confidence Intervals of CVg Lower: 9.73, Upper: 21.98
Analytical CV 2.4
Calculated Confidence Intervals of Analytical CV Lower: 2.16, Upper: 2.71
Measurand Mean 4.53
Measurand Min
Measurand Max
Measurand SD

Coding