Why We Trust Some Studies More Than Others
Take the reading one piece at a time. For each piece: read it once, underline the sentence that says what happens, then look up any word in the list. Tap a word to see its definition.
Piece 1 of 2
Each card is a real cleft study stripped to its design. Card A (a single case description): a clinician writes up one baby with a cleft whose mother took a particular medicine during pregnancy, notes the timing, and asks whether the drug might be involved; no comparison baby is included.
Piece 2 of 2
Card B (a case-control study) [PMID:37118740]: researchers in five Arab countries collected mothers of babies born with a cleft (cases) and mothers of babies born without a cleft (controls), matched by hospital and month of birth, then asked both groups about pregnancy exposures. Card C (a randomized controlled trial, the TOPS trial) [PMID:37646677]: 558 infants with cleft palate were randomly assigned to repair at 6 or 12 months, with a standardized technique and blinded speech assessors measuring the outcome at age 5. Card D (a systematic review and meta-analysis) [PMID:33782057]: following a registered protocol and the PRISMA checklist, reviewers searched every database for all trials on a question, screened them in duplicate, judged each for bias, and pooled the trustworthy ones into a single combined estimate.
Reading the Research
- Skim the title and abstract first to get the gist.
- Circle the one sentence that states the main claim.
- Box the evidence the authors give for that claim.
- Mark one sentence that confuses you, and move on.
Now put it together: In one or two sentences, say what this whole reading is telling you about Mateo. Then go back to the lesson and fill in the guided notes.