1[1]Glueck DH, Muller KE. Adjusting power for a baseline covariate in linear models [J]. Stat Med, 2003, 22(16):2535-2551.
2[2]Wang H, Chow SC. A practical approach for comparing means of two groups without equal variance assumption[J]. Stat Med,2002, 21 (20): 3137-3151.
3[3]Kamoen A, Dermaut L, Verbeeck R. The clinical significance of error measurement in the interpretation of treatment results [J].Eur J Orthod, 2001,23(5) :569-578.
4[4]Vangel MG, Rukhin AL. Maximum likelihood analysis for heteroscedastic one-way random effects ANOVA in interlaboratory studies [J]. Biometrics, 1999, 55(1): 129-136.
5[5]O'Neill ME, Mathews KL. Levene tests of homogeneity of variance for general block and treatment designs [J]. Biometrics, 2002Mar, 58(1) :216-224.
6[6]Paul-Dauphin A,Guillemin F,Virion JM,et al. Bias and precision in visual analogue scalas: a randomized controlled trial[J]. Am J Epidemiol, 1999, 150(10): 1117-1127.
7[7]Chuang-Stein C, Tong DM. Multiple comparisons procedures for comparing several treatments with a control based on binary data [J]. Stat Med, 1995, 14(23):2509-2522.
8[8]Cheung SH, Holland B. A step-down procedure for multiple tests of treatment versus control in each of several groups [J]. Stat Med, 1994, 13(21):2261-2267.
