Trial biostatistics toolkit

Stage 2: statistical analysis plan

Mock shells for the planned outputs

Shells for the six executed tables

Synthetic data only: simulated for this worked example; not real trial data and not a regulatory deliverable.

Planned layouts with placeholders (x). Titles, populations and footnotes match the executed outputs in the analysis stage. Every output carries the footnote: "Synthetic data; not a regulatory deliverable."

Table 14.1.2: Demographic and Baseline Characteristics

Safety set

CharacteristicTR (N=xx)RT (N=xx)Total (N=xx)
Age (years)
nxxxxxx
Mean (SD)xx.x (xx.x)xx.x (xx.x)xx.x (xx.x)
Medianxx.xxx.xxx.x
Min - Maxxx.x - xx.xxx.x - xx.xxx.x - xx.x
Height (cm), Weight (kg), BMI (kg/m2)
(n, Mean (SD), Median, Min - Max as for age)
Sex, n (%)
nxxxxxx
Femalexx (xx.x%)xx (xx.x%)xx (xx.x%)
Malexx (xx.x%)xx (xx.x%)xx (xx.x%)
Race, n (%)
nxxxxxx
<category>xx (xx.x%)xx (xx.x%)xx (xx.x%)
Ethnicity, n (%)
nxxxxxx
<category>xx (xx.x%)xx (xx.x%)xx (xx.x%)

Percentages use the number of participants in the column.

Table 14.3.1.1: Overview of Treatment-Emergent Adverse Events

Safety set

CategoryTest (N=xx)Reference (N=xx)
Participants with at least one TEAExx (xx.x%)xx (xx.x%)
Total number of TEAEsxxxx
Participants with a related TEAExx (xx.x%)xx (xx.x%)
Participants with a severe TEAExx (xx.x%)xx (xx.x%)
Participants with a serious TEAExx (xx.x%)xx (xx.x%)
Participants with a TEAE leading to withdrawalxx (xx.x%)xx (xx.x%)
Participants with a TEAE leading to deathxx (xx.x%)xx (xx.x%)

Counted by treatment at onset; each participant counts once per row; N = participants dosed with that treatment. No total column: in a crossover a participant contributes to both columns. MedDRA v28.1 (synthetic coding).

Table 14.4.1.1: Summary of Plasma SIMDRUG Concentrations (ng/mL) by Nominal Time

PK concentration set

Nominal time (h)StatisticTest (N=xx)Reference (N=xx)
0 (pre-dose)n (n BLQ)xx (xx)xx (xx)
Mean (SD)xx.xx (xx.xx)xx.xx (xx.xx)
CV%xx.xxx.x
Medianxx.xxxx.xx
Min - Maxxx.xx - xx.xxxx.xx - xx.xx
0.25 ... 48(as above)

BLQ (below 0.50 ng/mL) set to 0 (ICH M13A); n BLQ in parentheses. Periods excluded under the SAP rules are not summarized.

Table 14.4.4.1: Summary of Plasma SIMDRUG PK Parameters

PK parameter set

ParameterStatisticTest (N=xx)Reference (N=xx)
Cmax (ng/mL)nxxxx
Mean (SD)xx.x (xx.x)xx.x (xx.x)
CV%xx.xxx.x
Geometric meanxx.xxx.x
Geometric CV%xx.xxx.x
Medianxx.xxx.x
Min - Maxxx.x - xx.xxx.x - xx.x
AUC(0-t), AUC(0-inf), AUC(0-inf) extrapolated (%), t1/2 (h), lambda z (1/h)(as Cmax)
tmax (h)nxxxx
Medianx.xxx.xx
Min - Maxx.xx - x.xxx.xx - x.xx

Actual sampling times. AUC by linear-up/log-down. Geometric CV% = 100*sqrt(exp(s^2) - 1). Periods excluded under the SAP rules are not summarized. AUC(0-inf) is not summarized when more than 20% is extrapolated; lambda z-based parameters are not summarized when the adjusted R-squared is below 0.90 (n excluded given in a footnote).

Table 14.4.3.1: Bioequivalence Analysis: Ratio of Geometric Means (Test/Reference) and 90% CI

Bioequivalence set

ParameternAdjusted geometric mean, TestAdjusted geometric mean, ReferenceRatio T/R (%)90% CI (%)Within-participant CV%Within 80.00 to 125.00%
Cmax (ng/mL)xxxxx.xxxx.xxxx.xxxx.xx, xxx.xxxx.xYes/No
AUC(0-t) (h*ng/mL)xxxxx.xxxx.xxxx.xxxx.xx, xxx.xxxx.xYes/No
AUC(0-inf) (h*ng/mL), supportivexxxxx.xxxx.xxxx.xxxx.xx, xxx.xxxx.xYes/No

GLM on ln(parameter): sequence, participant(sequence), period, formulation. Decision on unrounded limits. AUC(0-inf): participants whose AUC(0-inf) passes the parameter rules in both periods.

Table 14.4.3.2: ANOVA Effects for ln(Cmax) and ln(AUC(0-t))

Bioequivalence set

ParameterEffectDFSum of squaresMean squareFError termp-value
Cmax / AUC(0-t)Sequencexxx.xxxxx.xxxxxx.xxParticipant(sequence)x.xxxx
Cmax / AUC(0-t)Participant(sequence)xxx.xxxxx.xxxxxx.xxResidualx.xxxx
Cmax / AUC(0-t)Periodxxx.xxxxx.xxxxxx.xxResidualx.xxxx
Cmax / AUC(0-t)Formulationxxx.xxxxx.xxxxxx.xxResidualx.xxxx
Cmax / AUC(0-t)Residualxxx.xxxxx.xxxx

Sequence tested against participant(sequence); other effects against the residual. No carry-over test (ICH M13A).