Table 2.

Interobserver correlation [intraclass correlation coefficient (ICC)]: three observers

	Nulliparous		Control group		Prolapse group
	ICC	95 % CI	ICC	95 % CI	ICC	95 % CI
PCL
Anterior	0.98	(0.93–0.99)	0.95	(0.83–0.99)	0.95	(0.84–0.99)
Middle	0.94	(0.82–0.98)	0.88	(0.64–0.97)	0.96	(0.89–0.99)
Posterior	0.74	(0.23–0.93)	0.48	(−0.64–0.87)	0.79	(0.34–0.95)
MPL
Anterior	0.97	(0.92–0.99)	0.82	(0.44–0.96)	0.98	(0.95–0.99)
Middle	0.97	(0.92–0.99)	0.95	(0.84–0.99)	0.95	(0.86–0.99)
Posterior	0.67	(0.02–0.91)	0.91	(0.72–0.98)	0.88	(0.63–0.97)
Perineal line
Anterior	0.73	(0.20–0.93)	0.57	(−0.47–0.91)	0.98	(0.94–1.0)
Middle	0.96	(0.89–0.99)	0.86	(0.55–0.97)	0.94	(0.82–0.98)
Posterior	0.61	(−0.21–0.91)	0.43	(−0.80–0.86)	0.87	(0.58–0.97)
H-line
Anterior	0.98	(0.93–0.99)	0.87	(0.60–0.97)	0.98	(0.94–0.99)
Middle	0.85	(0.55–0.96)	0.82	(0.45–0.96)	0.95	(0.86–0.99)
Posterior	0.52	(−0.42–0.87)	0.63	(−0.16–0.91)	0.87	(0.60–0.97)

CI confidence interval, PCL  pubococcygeal line, MPL midpubic line