1[2 {"id": "C1", "text": "Pooling the two poolable RCTs (S1, S4) gives a random-effects θ of -0.188 (95% CI -0.396 to 0.020), about a 17% reduction in task time with AI.", "results_keys": ["re_estimate", "re_ci_low", "re_ci_high", "pooled_pct_change_re", "k_pooled"], "status": "supported", "caveat": "k = 2, and S4's SE is approximate (back-calculated from p = 0.471)."},3 {"id": "C2", "text": "The pooled effect is not statistically significant at the 5% level.", "results_keys": ["pooled_significant_5pct", "re_ci_low", "re_ci_high"], "status": "supported", "caveat": "The interval only just includes 0; with k = 2 it understates between-study uncertainty."},4 {"id": "C3", "text": "Heterogeneity between the pooled studies is low (Q = 0.32, I² = 0%, τ² = 0).", "results_keys": ["q_stat", "i2", "tau2", "heterogeneity_interpretation"], "status": "supported", "caveat": "With one degree of freedom these statistics are uninformative. The unpooled point estimates (S2 +19%, S3 -30%) point in opposite directions."},5 {"id": "C4", "text": "The evidence does not support a general conclusion that generative-AI assistance shortens task-completion time.", "results_keys": ["k_pooled", "k_harmonised", "items", "pooled_significant_5pct"], "status": "supported", "caveat": "This is an interpretive judgement based on the small number of poolable studies, the non-significant pooled result and the conflicting unpooled estimates."},6 {"id": "C5", "text": "S2 (+19% time) and S3 (-29.79% time) can be harmonised (θ = 0.174 and -0.354) but cannot be pooled, because no SE is obtainable from the extracts. S5 cannot be harmonised (it measures output counts, using a DiD around the withdrawal of access).", "results_keys": ["items", "k_harmonised", "k_extracted"], "status": "supported", "caveat": "S2's CI exists in the original paper's figure, but the extract rules exclude it."},7 {"id": "C6", "text": "Using the CI-derived SE for S1 (0.138) instead of the printed SE (0.14) does not change the pooled result.", "results_keys": ["sensitivity_s1_se_from_ci"], "status": "supported", "caveat": "This only covers rounding of S1's SE."}8]9