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Table 1 Total study population and response-rates

From: Evaluating the effectiveness of the SMART contract-signing strategy in reducing the growth of Swedish Adolescents’ substance use and problem behaviors

  T1 T2 T3
Total-population n = 518 n = 502 n = 476
Response-rate n = 432 n = 458 n = 422
  83 % 91 % 89 %