Table 4. Inter-rater reliability of gravity-based inclinometer and iPhone^® app.

Inter-rater reliability	Gravity-based inclinometer		iPhone® app
	Flexion ROMf	Extension ROMf	Flexion ROMf	Extension ROMf
ICCa (95% CIb)	0.77 (0.52–0.89)	0.87 (0.73–0.94)	0.85 (0.69–0.93)	0.89 (0.76–0.94)
SEMc	3.04°	2.96°	3.12°	2.66°
2 SEMsd	6.08°	5.92°	6.24°	5.32°
MDC95e	8.44°	8.22°	8.66°	7.38°

Notes.

^aICC, Intraclass correlation coefficient.

^bCI, Confidence interval.

^cSEM, Standard error of measurement.

^d2 SEMs, Two standard errors of measurement.

^eMDC₉₅, Minimum detectable change at the 95% confidence level.

^fROM, Range of motion.