Round 6: response to reviewers

Protocol version reviewed: 0.6.0. Revised version: 0.7.0.

Verdicts: GPT-6 Astra MINOR REVISION (no major findings); Fable 5.1 ACCEPT; Grok 4.7 MINOR REVISION. Every comment is answered below and recorded in ../comments.csv.

Summary of main changes

• Known status defined with competing deaths and administrative censoring; t defined for the 95 percent sensitivity analysis; bias illustration labeled as such with no general direction claimed.
• Recorded harms quantity defined as Q with a formula and a descriptive interpretation; certainty range 0.8 to 1.25 on Q.
• Competing risks: anchored not applicable; Kaplan-Meier contrasts as cause specific inputs; proportional subdistribution hazards assumption; exact conversion rules with stated constant hazard approximation; ordering of networks for conclusions.
• Data items and imprecision cross references completed.

GPT-6 Astra (gpt-6-astra)

C6-1 (minor; Competing risks). Cause specific conversion omits its constant hazard assumption.

Response (revised). Agreed. The conversion is stated to assume constant cause specific hazards over the analyzed horizon and is labeled an exponential competing risks approximation; leaving the competing hazard unchanged is stated as assuming no effect on it; when time varying baseline hazards are available cumulative incidence is computed by integration; otherwise, if the approximation cannot be supported, only relative effects are reported.

C6-2 (minor; Competing risks). Proportional subdistribution hazards unstated.

Response (revised). Agreed. Subdistribution networks assume proportional subdistribution hazards; proportionality assessments are extracted and curves inspected; with material nonproportionality, horizon specific contrasts are reported separately and no constant subdistribution hazard ratio converts effects across horizons.

C6-3 (minor; Recorded harms analysis). The rate ratio label does not match the fitted quantity.

Response (revised). Agreed. The reported quantity is Q, the exponentiated complementary log log contrast with nominal observation periods, given as a formula and interpreted descriptively; certainty uses 0.8 to 1.25 on Q.

C6-4 (minor; Known status). Competing deaths and administrative censoring.

Response (revised). Agreed; your definition adopted (fable-5.1 F6-2 proposed the same).

C6-5 (minor; Hazard ratio analysis). Equal loss given a general direction of bias.

Response (revised). Agreed. The text states there is no general bound or direction even with equal missing fractions and labels the numbers as an illustration with missingness independent of the outcome at baseline.

Fable 5.1 (fable-5.1)

F6-1 (minor; Conclusions for harms). Order of networks when the primary hazard type network fails.

Response (revised). Agreed; your ordering adopted (primary hazard type network, then the other labeled with its hazard type, then the recorded harms analysis), and a trial reporting both types contributes each to its own network. grok-4.7 (G6-2) proposed excluding the cause specific network from conclusions; we kept it as the second step because a connected network of reported Cox hazard ratios is a valid relative effect on the harm, more interpretable than the recorded harms analysis.

F6-2 (minor; Known status). Competing deaths omitted.

Response (revised). Agreed; see C6-4.

F6-3 (minor; Competing risks). Not applicable not anchored to the outcome.

Response (revised). Agreed; not applicable only for outcomes with no competing event (such as O20); otherwise the hazard type follows the estimator.

F6-4 (minor; Competing risks; absolute effects). Source of the hazards; Kaplan-Meier wording.

Response (revised). Agreed. Both rates are events per person year from the covering reference arms, pooled on the log scale, under constant hazards (stated); the reference risk bullet names Aalen-Johansen for outcomes with competing events and Kaplan-Meier otherwise.

F6-5 (minor; Competing risks). Kaplan-Meier contrasts are valid cause specific inputs.

Response (revised). Agreed. A contrast between arms of one minus Kaplan-Meier with competing deaths censored is a cause specific input; it is never an absolute or reference risk.

F6-6 (minor; Certainty; data items). Cross references and data items.

Response (revised). Agreed. The imprecision rule names the relative only rule and the recorded harms range; data items add estimator, hazard type, known status counts and observation period.

Grok 4.7 (grok-4.7)

G6-1 (minor; Hazard ratio analysis). The 95 percent sensitivity does not choose t.

Response (revised). Agreed; your sentence adopted.

G6-2 (minor; Conclusions; time to event counts). Conclusions across hazard type networks; counts for time to event outcomes.

Response (partly revised). Agreed for time to event counts: they enter only the subdistribution network and are never pooled with cause specific estimates. For conclusions we adopted fable-5.1 ordering (primary hazard type network, then the other hazard type network labeled, then the recorded harms analysis) rather than excluding the cause specific network, because a connected network of reported Cox hazard ratios gives a valid relative effect on the harm and is more interpretable than the recorded harms quantity Q.

G6-3 (minor; Competing risks). Conversion sentences ambiguous.

Response (revised). Agreed; your wording adopted (constant rates for the reference node, pooled on the log scale; replacement of lambda1 everywhere; definition of F_ref; relative only fallback).