Table 4

Change in missing data strategy over time

	Estimate	SE	z Value	p Value
Fail	0.03	0.02	1.38	0.16
All FU	−0.10	0.09	−1.18	0.24
All FU (some dropout)	−0.09	0.06	−1.43	0.15
Baseline assigned	0.47	0.36	1.31	0.19
Censored (end of FU)	0.09	0.03	3.19	<0.01*
LOCF	0.06	0.03	2.01	0.045*
Group average	0.07	0.12	0.62	0.54
Mean FU points	0.07	0.07	0.92	0.36
Other	0.05	0.09	0.55	0.59
Sample FU	−0.10	0.02	−4.40	<0.001*
Interpolation	0.33	0.09	3.83	<0.001*
Unclear	0.02	0.02	0.94	0.35