Table 3

Sickness absence (SA) and healthcare use characteristics of individuals in each of the five trajectories; (%), χ2-test value and Nagelkerke R2 with variable removed, and difference in Nagelkerke R2 with variable removed and Nagelkerke R2 of full model (R2=0.294) among the 4894 people with a new SA spell ≥21 days due to osteoarthritis.

Late decrease (%)Fluctuating (%)Slow decrease (%)Medium fast decrease (%)Fast decrease (%)χ2-test p valueNagelkerke R2 with variable removedDifference in Nagelkerke R2 to full model
Type of osteoarthritis diagnosis in the index SA spell
 M15 polyosteoarthritis1.82.50.70.51.5<0.0010.2790.015
 M16 osteoarthritis of hip31.424.531.541.129.1
 M17 osteoarthritis of knee37.741.041.338.238.2
 M18 osteoarthritis of first carpometacarpal joint6.39.55.810.77.0
 M19 other and unspecified osteoarthritis22.722.620.79.524.3
Extent of SA at start of index SA spell
 Part-time 25%–75%9.030.514.50.312.9<0.0010.2710.023
 Full-time 100%91.069.585.599.787.1
Preceding SA in the 365 days before start of index SA spell
 0.25–49.75 net days23.521.517.312.116.3<0.0010.2880.006
 50–89.75 net days7.16.56.16.03.7
 90–179.75 net days5.36.37.44.63.3
 180–365 net days6.63.23.41.01.2
Diagnosis in preceding SA*
 Any42.537.534.223.724.5<0.0010.294<0.001
 Osteoarthrosis(M15-M19)15.015.415.310.610.4<0.0010.2930.001
 Other joint diagnoses (M00-14, M20-25)4.73.73.02.63.20.2700.2920.002
 Other musculoskeletal diagnoses (M30-99)9.08.95.14.05.3<0.0010.2920.002
 Mental diagnoses (F00-F99)4.22.12.31.41.60.0060.2930.001
 Other diagnoses15.014.212.27.97.5<0.0010.2930.001
Inpatient healthcare in the 365 days preceding the index SA spell
 At least 1 day (all diagnoses)17.915.218.325.119.5<0.0010.294<0.001
 Osteoarthrosis(M15-M19)9.06.811.621.213.9<0.0010.2930.001
 Other joint diagnoses (M00-14, M20-25)0.80.20.80.10.60.1050.2930.001
 Other musculoskeletal diagnoses (M30-99)1.30.71.61.31.30.6930.2930.001
 Mental diagnoses (F00-F99)1.10.70.40.10.20.0080.2930.001
 Other diagnoses†7.48.46.04.85.30.0160.2930.001
Inpatient healthcare in the first 21 days of the index SA spell
 At least 1 day (all diagnoses)21.626.342.273.038.6<0.0010.2930.001
 Osteoarthrosis(M15-M19)17.224.539.570.936.0<0.0010.2930.001
 Other joint diagnoses (M00-14, M20-25)0.80.40.50.40.30.7220.2930.001
 Other musculoskeletal diagnoses (M30-99)0.30.71.10.71.20.2880.2930.001
 Mental diagnoses (F00-F99)0.30.00.00.00.00.0180.325−0.031
 Other diagnoses†4.50.92.72.52.00.0050.2920.002
Specialised outpatient healthcare in the 365 days preceding the index SA spell
 At least 1 day (all diagnoses)68.974.178.990.478.9<0.0010.2920.002
 Osteoarthrosis(M15-M19)45.148.361.380.154.6<0.0010.2920.002
 Other joint diagnoses (M00-14, M20-25)7.78.46.56.211.4<0.0010.2920.002
 Other musculoskeletal diagnoses (M30-99)9.212.411.69.312.40.0430.2930.001
 Mental diagnoses (F00-F99)3.41.81.60.61.2<0.0010.2930.001
 Other diagnoses†40.442.939.240.037.20.1490.2930.001
Specialised outpatient healthcare in the first 21 days of the index SA spell
 At least 1 day (all diagnoses)30.928.224.826.033.6<0.0010.2930.001
 Osteoarthrosis (M15-M19)19.819.617.718.323.70.0010.2930.001
 Other joint diagnoses (M00-14, M20-25)1.62.80.91.03.4<0.0010.2920.002
 Other musculoskeletal diagnoses (M30-99)2.11.81.51.72.60.2440.2930.001
 Mental diagnoses (F00-F99)0.30.20.00.10.10.6270.2930.001
 Other diagnoses†10.36.56.17.27.20.1240.2930.001
Dispensed prescribed drugs in the 365 days preceding the index SA spell
 Analgesics60.253.157.851.443.3<0.0010.2890.005
 Anti-inflammatory67.366.467.364.759.0<0.0010.2930.001
 Ulcer medication21.623.320.416.014.3<0.0010.2920.002
 Soporific medication12.113.110.09.89.50.0910.2930.001
Dispensed prescribed drugs in the first 21 days of the index SA spell
 Analgesics49.349.761.784.860.3<0.0010.2890.005
 Anti-inflammatory32.527.124.823.828.40.0020.2930.001
 Ulcer medication6.35.16.55.53.90.0440.2930.001
 Soporific medication4.23.93.93.03.40.6880.2930.001
  • *Individuals who had more than one SA spell with different diagnoses are represented in each diagnosis group that they have had a spell with.

  • †All other diagnoses excluding O80 ‘Uncomplicated delivery’ and Z00-99 ‘Factors influencing health and encounters with health services’.