https://diditwork.org/ledger/ Did it work? — follow-up records Dated copies of evaluators' published estimates and the results of each scheduled re-check. Ledger head: 9 records, newest SHA-256 1f39a583b18400a18d63095eddf0f73f4a96dd57cce180a55c141ea030403486. 2026-10-21T12:00:00-04:00 Did it work?https://diditwork.org/ tag:diditwork.org,2026-10-21:ledger-ldg_eval_org_amf_drc_2027__0 Against Malaria Foundation: expected deaths averted (GiveWell grant for bed-net campaigns in the Democratic Republic of the Congo): 67,000 deaths expected to be averted 2026-10-21T12:00:00-04:00 GiveWell published 67,000 deaths expected to be averted (May 2026 grant estimate). Recorded October 21, 2026; we will re-check after October 1, 2027. Status: waiting for the re-check. Modeled, not guaranteed. Record SHA-256 d0faa130ff96d1dcc4a5b5ec79d237255b55851802ee16c560469b5ef6bbc8fe. tag:diditwork.org,2026-10-21:ledger-ldg_eval_hli_taimaka__0 Taimaka: WELLBYs per $1,000: 66 WELLBYs per $1,000 donated 2026-10-21T12:00:00-04:00 Happier Lives Institute published 66 WELLBYs per $1,000 donated (published table). Recorded October 21, 2026; we will re-check after October 1, 2027. Status: waiting for the re-check. Modeled, not guaranteed. Record SHA-256 1f39a583b18400a18d63095eddf0f73f4a96dd57cce180a55c141ea030403486. tag:diditwork.org,2026-10-21:ledger-ldg_eval_hli_sm__0 StrongMinds: WELLBYs per $1,000: 40.37 WELLBYs per $1,000 donated 2026-10-21T12:00:00-04:00 Happier Lives Institute published 40.37 WELLBYs per $1,000 donated (published table). Recorded October 21, 2026; we will re-check after October 1, 2027. Status: waiting for the re-check. Modeled, not guaranteed. Record SHA-256 0288cf7711ac3977e5f924cadb7679fd0b304d2ceca9c9da08a57f68a7d61eae. tag:diditwork.org,2026-10-21:ledger-ldg_eval_hli_pe__0 Pure Earth: WELLBYs per $1,000: 105.43 WELLBYs per $1,000 donated 2026-10-21T12:00:00-04:00 Happier Lives Institute published 105.43 WELLBYs per $1,000 donated (published table). Recorded October 21, 2026; we will re-check after October 1, 2027. Status: waiting for the re-check. Modeled, not guaranteed. Record SHA-256 0384b9fe794bf766f0857ad6ec406b1be6b9ef53e63abe8e329fc4789dc85fc2. tag:diditwork.org,2026-10-21:ledger-ldg_eval_hli_fb__0 Friendship Bench: WELLBYs per $1,000: 48.52 WELLBYs per $1,000 donated 2026-10-21T12:00:00-04:00 Happier Lives Institute published 48.52 WELLBYs per $1,000 donated (published table). Recorded October 21, 2026; we will re-check after October 1, 2027. Status: waiting for the re-check. Modeled, not guaranteed. Record SHA-256 8fb0b66e470b89f5cf52a9a42d7cd432fa16efba21ee89abaf80b2a9f882c357. tag:diditwork.org,2026-10-21:ledger-ldg_eval_gw_ni__0 New Incentives: cost per life saved: $4,500 per life saved 2026-10-21T12:00:00-04:00 GiveWell published $4,500 per life saved (2022–2024 average). Recorded October 21, 2026; we will re-check after October 1, 2027. Status: waiting for the re-check. Modeled, not guaranteed. Record SHA-256 f79ede7c4bf135c9dc277b9176916e30ebc304f8b5448b63ad07f447f08e5fb8. tag:diditwork.org,2026-10-21:ledger-ldg_eval_gw_mc_smc__0 Malaria Consortium: cost per life saved: $4,000 per life saved 2026-10-21T12:00:00-04:00 GiveWell published $4,000 per life saved (2022–2024 average). Recorded October 21, 2026; we will re-check after October 1, 2027. Status: waiting for the re-check. Modeled, not guaranteed. Record SHA-256 17e490ffb3f179509f450c6776653dab2eef0a17306dc9060719573fac8be7fe. tag:diditwork.org,2026-10-21:ledger-ldg_eval_gw_hki__0 Helen Keller Intl: cost per life saved: $3,500 per life saved 2026-10-21T12:00:00-04:00 GiveWell published $3,500 per life saved (2022–2024 average). Recorded October 21, 2026; we will re-check after October 1, 2027. Status: waiting for the re-check. Modeled, not guaranteed. Record SHA-256 28f295f16822a6620e3b136473dc9de3f8b2f50e5f9cd7c8cd8eb32896c8c3db. tag:diditwork.org,2026-10-21:ledger-ldg_eval_gw_amf__0 Against Malaria Foundation: cost per life saved: $5,500 per life saved 2026-10-21T12:00:00-04:00 GiveWell published $5,500 per life saved (2022–2024 average). Recorded October 21, 2026; we will re-check after October 1, 2027. Status: waiting for the re-check. Modeled, not guaranteed. Record SHA-256 1f91597e7a5dc20edcb1b79cb6e3785f9463ee2e6e71b6afd941852f99dd94cf.