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Table 3 Reporting of essential items applicable to validation studies only

From: Quality and transparency of reporting derivation and validation prognostic studies of recurrent stroke in patients with TIA and minor stroke: a systematic review

Characteristic

Number (%)

N = 96

Comparison with derivation cohort

 Mention of differences (or no difference) in definitions between the validation and the derivation cohort for each of the following

  Setting

17 (17.7)

  Eligibility criteria

21 (21.9)

  Predictors

21 (21.9)

  Outcome

21 (21.9)

  Unclear or not reported

71 (74.0)

 Mention of differences (or no difference) in definitions between the validation and the derivation cohort

  Mentioned all four (setting, eligibility, predictors, outcome)

17 (17.7)

  Some are mentioned

8 (8.3)

  Unclear or not reported

71 (74.0)

 Distribution of important variables (demographics [at least age and sex], predictors, and outcome) presented along with the development study

  Yes

21 (21.9)

Model evaluation

 Type of external validation

  Temporal

4 (4.2)

  Geographical

64 (66.7)

  Methodological/setting (different setting such as ED vs clinic)

26 (27.1)

  Unclear or not reported

2 (2.1)

 Model adjusted or updated

 Yes

23 (24.0)