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Table 3 Intra-rater measures reliability results

From: A method for quantitative measurement of lumbar intervertebral disc structures: an intra- and inter-rater agreement and reliability study

Measurement n (slices) ICC [95% CI]
Length - AIVH 258 0.91 [0.88, 0.93]
Length - PIVH 258 0.90 [0.88, 0.92]
Length - IVDL 258 0.99 [0.99, 1.00]
Length - ADML 258 0.95 [0.94, 0.96]
Length - PDML 258 0.94 [0.92, 0.95]
Length - ADSL 227 0.98 [0.98, 0.99]
  n (participants)  
Area – CAIH 24 0.99 [0.98, 1.00]
Area – CPIH 24 0.98 [0.96, 0.99]
Area - CIVD 24 1.00 [1.00, 1.00]
Area - CADM 24 0.97 [0.94, 0.99]
Area - CPDM 24 0.95 [0.89, 0.98]
Area - CDS 25 0.97 [0.93, 0.99]
Volume - VADM 24 0.95 [0.89, 0.98]
Volume - VPDM 24 0.95 [0.88, 0.98]
  1. Number of slices measured for length and participants measured for cross-sectional area and volume measurements, intraclass correlation coefficient (ICC), and accompanying 95% confidence intervals (CI). Due to absence of dural sac at certain otherwise measured slices, a lower number of slices were measured. Participants with unequal start- and end-slices were excluded from the analyses, leading to varying numbers of included participants.