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Table 2 Results of intra- and inter-observer reliability test

From: The effect of age on sagittal plane profile of the lumbar spine according to standing, supine, and various sitting positions

Posture

Intra-observer reliability*

Inter-observer reliability*

Standing

0.97

0.89

Sitting

  

  30°

0.98

0.91

  60°

0.96

0.88

  90°

0.96

0.88

Supine

0.97

0.90

  1. *The intra- and inter-observer reliability was tested using the intraclass coefficient (ICC) test with a set-up of a two-way-mixed and absolute agreement. The values of the ICC test more than 0.8 could be thought to be strongly reliable.