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Table 2 Description of missing information in two populations followed over 1 year with weekly text messages

From: Absence of low back pain in patients followed weekly over one year with automated text messages

  Study 1 Study 2
Number of weeks with no text-message response Number of participants (%) Number of participants (%)
0 58 (72.5) 83 (40)
1-5 17 (21) 84 (40)
6-10 3 (4) 15 (7)
11-26 2 (2.5) 27 (13)
27 + *   
  1. Study 1 (N = 80) consisted of participants with Modic changes and study 2 (N = 209) included participants with non-specific low back pain.
  2. * Participants with 27 or more missing weeks had been excluded from the analyses already from the beginning