Skip to main content

Table 2 Tabulation of the final included baseline predictors in the development and validation data sets

From: Predicting the duration of sickness absence due to knee osteoarthritis: a prognostic model developed in a population-based cohort in Sweden

Predictor

Development data

n SA spells (%)

Validation data

n SA spells (%)

Sex

  Women

4654 (55.0)

1970 (54.5)

  Men

3814 (45.0)

1652 (45.5)

Age groups

  18–30 years

62 ( 0.7)

15 ( 0.4)

  31–40 years

241 ( 2.8)

100 ( 2.8)

  41–50 years

1350 (15.9)

520 (14.3)

  51–57 years

2580 (30.5)

1171 (32.3)

  58–64 years

4235 (50.0)

1824 (50.2)

Geographical region

  North

1228 (14.5)

522 (14.4)

  Middle

1222 (14.4)

527 (14.5)

  Stockholm/Gotland

1483 (17.5)

614 (16.9)

  West

2628 (31.0)

1105 (30.4)

  South

1907 (22.5)

862 (23.7)

Educational level (years)

  Elementary school (≤ 9 years)

1839 (21.7)

814 (22.4)

  High School (10–12 years)

4664 (55.1)

2042 (56.3)

  College/university (> 12 years)

1965 (23.2)

774 (21.3)

Number of inpatient healthcare days in the 12 months before start date of the SA spell1

  0

6507 (76.8)

2804 (77.2)

  1–2

872 (10.3)

393 (10.8)

  >2

1089 (12.9)

433 (11.9)

Number of SA days in the 12 months before start date of the SA spell

  0

5532 (65.3)

2336 (64.4)

  (0–90]

2070 (24.4)

901 (24.8)

  (90–180]

356 ( 4.2)

144 ( 4.0)

  (180–366]

510 ( 6.0)

249 ( 6.9)

Specialized outpatient healthcare in the 12 months before start date of the SA spell1

  0

1569 (18.5)

691 (19.0)

  1–2

3549 (41.9)

1531 (42.2)

  >2

3350 (39.6)

1408 (38.8)

Employment status at baseline (SA start date)

  Employed/student

7905 (93.4)

3393 (93.5)

  Parental leave

13 ( 0.2)

< 8 ( 0.1)

  Unemployed

550 ( 6.5)

235 ( 6.5)

Specialized healthcare at start of the SA spell

  No

3265 (38.6)

1439 (39.6)

  Yes

5203 (61.4)

2191 (60.4)

  1. 1 = Excluding healthcare with O80 and Z-codes Z00-Z99 except Z73.0
  2. SA = sickness absence