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Table 1 The response rate of the sub-cohorts by follow-up surveys, stratified by types of graduates N(%)

From: Sample attrition analysis in a prospective cohort study of medical graduates in China

Follow-up surveys Sub-cohorts
2015 2016 2017 2018 2019
—— All ——
  Baseline N 620 (100%) 739 (100%) 811 (100%) 749 (100%) 701 (100%)
  First 570 (91.9%) 577 (78.1%) 585 (72.1%) 529 (70.6%) 612 (87.3%)
  Second 424 (68.4%) 592 (80.1%) 586 (72.3%) NA NA
  Third 474 (76.5%) 493 (66.7%) NA NA NA
  Fourth 420 (67.7%) NA NA NA NA
—— CSP ——
  Baseline N 305 (100%) 437 (100%) 481 (100%) 437 (100%) 381 (100%)
  First 279 (91.5%) 373 (85.4%) 352 (73.2%) 328 (75.1%) 351 (92.1%)
  Second 277 (90.8%) 383 (87.6%) 383 (79.6%) NA NA
  Third 298 (97.7%) 330 (75.5%) NA NA NA
  Fourth 239 (78.4%) NA NA NA NA
—— NCSP ——
  Baseline N 315 (100%) 302 (100%) 330 (100%) 312 (100%) 320 (100%)
  First 291 (92.4%) 204 (67.6%) 233 (70.6%) 201 (64.4%) 261 (81.6%)
  Second 181 (46.7%) 209 (69.2%) 203 (61.5%) NA NA
  Third 176 (55.9%) 163 (54.0%) NA NA NA
  Fourth 181 (57.5%) NA NA NA NA
  1. Notes: NA not applicable