Table 4.
Inter-rater and Intra-rater reliability (Intraclass Correlation Coefficients using mean of repetitions 2–5)
| Interrater | NoLBP subjects | LBP subjects | ||||||
|---|---|---|---|---|---|---|---|---|
| n = | T12 angle | Pelvic angle | Lumbar ROM | n = | T12 angle | Pelvic angle | Lumbar ROM | |
| Flexion | 32 | .98 (.96 to .99) | .97 (.94 to .99) | .80 (.56 to .91) | 32 | .96 (.92 to .98) | .92 (.84 to .96) | .95 (.90 to .98) |
| Extension | 31 | .88 (.74 to .94) | .87 (.72 to .93) | .91 (.81 to .96) | 28 | .95 (.90 to .98) | .77 (.52 to .89) | .94 (.87 to .97) |
| Lordosis | 33 | .83 (.65 to .91) | .91 (.83 to .96) | .90 (.79 to .95) | 32 | .83 (.65 to .92) | .91 (.81 to .96) | .94 (.87 to .97) |
| Lateral Flexion left | 33 | .88 (.76 to .94) | .89 (.77 to .94) | .84 (.68 to .92) | 32 | .89 (.76 to .94) | .79 (.56 to .90) | .89 (.78 to .95) |
| Lateral flexion right | 33 | .94 (.88 to .97) | .88 (.72 to .95) | .92 (.84 to .96) | 32 | .82 (.64 to .91) | .67 (.33 to .83) | .89 (.79 to .95) |
| Intrarater | NoLBP subjects | LBP subjects | ||||||
| Flexion | 28 | .97 (.93 to .99) | .95 (.90 to .98) | .86 (.68 to .94) | 25 | .95 (.89 to .98) | .86 (.69 to .94) | .86 (.69 to .94) |
| Extension | 28 | .84 (.64 to .92) | .71 (.38 to .86) | .79 (.54 to .90) | 21 | .94 (.88 to .98) | .67 (.25 to .86) | .94 (.87 to .97) |
| Lordosis | 30 | .71 (.40 to .86) | .84 (.68 to .93) | .81 (.59 to .91) | 25 | .89 (.74 to .95) | .82 (.60 to .92) | .85 (.65 to .93) |
| Lateral Flexion left | 30 | .77 (.53 to .89) | .85 (.69 to .93) | .76 (.49 to .89) | 25 | .92 (.82 to .96) | .83 (.61 to .92) | .92 (.81 to .96) |
| Lateral flexion right | 30 | .95 (.90 to .98) | .88 (.75 to .94) | .89 (.77 to .95) | 25 | .85 (.46 to .94) | .70 (.34 to .87) | .92 (.68 to .97) |
Legend: ROM = ROM Intraclass correlation co-efficients (ICC 2,2) and 95 % confidence intervals