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Table 1 Assessments of potential sick leave reduction by modifications to working conditions.

From: Reliability of sickness certificates in detecting potential sick leave reduction by modifying working conditions: a clinical epidemiology study

   Officers answers of Consultants answers of
Assessment based on- Number of sick leave forms Number of assessmentsa Uncertain % Yes % (95% CI) Yes % Minimum Maximum Number of assessmentsa Uncertain % Yes % (95% CI) Yes % Minimum Maximum
Sickness Certificate 1 (SC1) 501 990 24.9 30.1 (26.1, 34.4) 23.9, 41.8 992 20.2 22.1 (18.6, 26.1) 8.5, 35.4
SC1 + additional history of sick-leave 498 991 24.4 30.5 (26.5, 34.8) 19.4, 43.7 989 21.1 20.6 (17.2, 24.5) 8.1, 39.8
Subgroup SC1 + occupation not notified 221 436 35.6 24.5 (18.9, 30.6) 13.8, 41.2 439 31.9 15.7 (11.2, 21.3) 6.0, 25.3
Subgroup SC1 + special notification from the practitioner 24 48 20.8 47.9 (27.4, 69.0) 23.1, 83.3 48 16.7 41.7 (22.1, 63.4) 25.0, 58.3
SC1 in Sickness Certificate 2 subgroup 343 679 25.5 32.7 (27.7, 37.9) 25.7, 39.4 684 19.2 25.4 (20.8, 30.3) 12.0, 38.8
Sickness Certificate 2 343 680 17.9 34.6 (29.6, 39.9) 26.2, 44.3 683 15.4 28.3 (23.6, 33.4) 19.8, 36.8
  1. a Missing assessments produce inconsistencies between the number of sick-listed subjects and the number of assessments. Assessments by NIO officers and medical consultants of whether modified working conditions might reduce the ongoing sick leave based on different levels of information. Proportions of yes and uncertain results are presented as means.