Table 3.

95% prediction limits in manual and digital measurement

	95% prediction limit	Manual set		Digital set
		Mean	Range	Mean	Range
Proximal end vertebra	Intrarater	2.06	1.6–2.8	2.64	2.29–3.03
	Interrater	2.203	2.17–2.25	2.18	2.01–2.43
Distal end vertebra	Intrarater	1.93	1.41–2.51	2.26	1.91–2.89
	Interrater	1.93	1.88–1.97	1.75	1.61–1.95
Cobb angle	Intrarater	7.68°	6.41–8.60	9.038	4.87–14.53
	Interrater	6.82	6.38–7.16	6.34	4.69–7.97