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Table 2

 Pain, disability, and work status of 969 participants immediately before onset of episode and at study entry, six weeks, three months, and 12 months. Figures are numbers (percentages) of participants

Pre-episodeStudy entry6 weeks3 months12 months
Pain:
 None*0382 (39.5)499 (51.5)556 (57.4)
 Very mild*22 (2.3)195 (20.0)158 (16.3)100 (10.3)
 Mild*85 (8.7)213 (22.0)153 (15.8)132 (13.6)
 Moderate*349 (36.0)128 (13.3)120 (12.4)128 (13.2)
 Severe*426 (44.0)34 (3.5)26 (2.7)23 (2.4)
 Very severe*87 (9.0)3 (0.3)05 (0.5)
Disability:
 Not at all*59 (6.0)584 (60.3)691 (71.4)725 (74.8)
 Little bit*133 (13.7)188 (19.4)135 (13.9)110 (11.4)
 Moderate*215 (22.2)115 (11.9)89 (9.2)84 (8.7)
 Quite a bit*373 (38.6)53 (5.5)37 (3.8)22 (2.3)
 Extreme*189 (19.5)15 (1.5)4 (0.4)3 (0.2)
Work status:
 Employed:
  Full duties742 (76.6)461 (47.6)670 (69.1)696 (71.8)699 (72.2)
  Selected duties27 (2.8)145 (15.0)75 (7.7)59 (6.1)40 (4.1)
  Sick leave7 (0.7)159 (16.4)17 (1.8)12 (1.2)12 (1.2)
  Maternity or long service leave17 (1.8)19 (2.0)10 (1.0)8 (0.8)7 (0.7)
 Unemployed30 (3.1)36 (3.7)35 (3.6)33 (3.4)33 (3.4)
 Not seeking paid employment, such as retired142 (14.7)145 (15.0)143 (14.9)143 (14.9)148 (15.3)
 Other4 (0.3)4 (0.3)5 (0.5)5 (0.5)5 (0.5)
 Missing data0014 (1.4)13 (1.3)25 (2.6)

*Not formally measured but study inclusion was that current episode was preceded by period of at least one month without back pain.

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