Table 3.

Type 1 Error (%), Scenario 2: Survival and ALSFRS; $T_O^U=\mathit{\text{Propsed O'Brien test}}$, $T_O^{U,\mathit{\text{Ad}}}=\mathit{\text{Proposed Adaptive O'Brien test}}$, $T_{\mathit{\text{FS}}}^U=\mathit{\text{Proposed Finkelstein}}-\mathit{\text{Schoenfeld}}(\mathit{\text{FS}})\mathit{\text{test}}$, $T_{\mathit{\text{FS}}}^{U,\mathit{\text{Ad}}}=\mathit{\text{Proposed Adaptive FS test}}$.

Censoring	No. Strata	n	m	$T_O^U$	$T_O^{U,\mathit{\text{Ad}}}$	$T_{\mathit{\text{FS}}}^U$	$T_{\mathit{\text{FS}}}^{U,\mathit{\text{Ad}}}$
Equal (52 %)	2	15	15	4.8	5.4	4.8	4.7
		30	30	4.7	5.1	4.7	4.8
		100	100	5.0	5.3	4.7	5.5
		80	40	4.9	4.5	5.1	4.3
	4	15	15	4.8	4.8	5.1	5.2
		30	30	5.1	5.7	5.5	5.7
		100	100	4.7	4.8	4.9	5.2
		80	40	5.0	4.7	5.2	5.3
Unequal (52 %, 80%)	2	15	15	5.0	5.6	4.8	5.4
		30	30	4.6	4.9	4.6	5.3
		100	100	5.5	5.2	5.4	5.6
		80	40	4.7	4.7	4.5	4.6
	4	15	15	4.9	5.1	5.2	5.9
		30	30	5.0	5.1	4.8	5.4
		100	100	4.9	4.8	5.0	5.3
		80	40	5.0	5.3	5.2	5.4