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Table 2 Socioeconomic indicators for the BOA populations with knee OA, grouped by age

From: Socioeconomic status of patients in a Swedish national self-management program for osteoarthritis compared with the general population—a descriptive observational study

 Knee OA totalKnee OA ≤65 yearsKnee OA > 65 years
 Knee OAReference groupKnee OAReference groupKnee OAReference group
Populationn = 49,366n = 148,098n = 22,075n = 66,225n = 27,291n = 81, 873
Women69 (68.6, 69.4)69 (68.8, 69.2)71 (70.4, 71.6)71 (70.7, 71.3)67.5 (66.9, 68.1)67.5 (67.2, 67.8)
Age in years *66.1 (9.6)66.1 (9.6)57.6 (6.2)57.6 (6.2)73.0 (5.3)73.0 (5.3)
Missingn = 0n = 0n = 0n = 0n = 0n = 0
Urban/suburban living70 (69.6, 70.4)68 (67.8, 68.2)69 (68.4, 69.6)68 (67.6, 68.4)70 (69.5, 70.5)68 (67.7, 68.3)
Missingn = 4n = 112n = 2n = 71n = 2n = 41
Married59 (58.6, 59.4)55 (54.7, 55.3)58 (57. 3, 58.7)55 (54.6, 55.4)60 (59.4, 60.6)54 (53.7, 54.3)
Missingn = 4n = 113n = 2n = 71n = 2n = 42
Born in Sweden90 (89.7, 90.3)87 (86.8, 87.2)88 (87.6, 88.4)84.5 (84.2, 84.8)92 (91.7, 92.3)88 (87.8, 88.2)
 The Nordic countries4 (3.8, 4.2)4.5 (4.4, 4.6)4 (3.7, 4.3)4 (3.9, 4.1)4 (3.8, 4.2)5.5 (5.3, 5.7)
 Europe3.5 (3.3, 3.7)5 (4.9, 5.1)4 (3.7, 4.3)6 (5.8, 6.2)3 (2.8, 3.2)4.5 (4.4, 4.6)
 Other countries2.5 (2.4, 2.6)3.5 (3.4, 3.6)4 (3.7, 4.3)5.5 (5.3, 5.7)1 (0,9, 1.1)2 (1.9, 2.1)
Missingn = 0n = 9n = 0n = 5n = 0n = 4
Educational level
 Low (0–9 years)23 (22.6, 23.4)28 (27.8, 28.2)15 (14.5, 15.5)17.5 (17.2, 17.8)29 (28.5, 29.5)37 (36.7, 37.3)
 Medium (10–14 years)61 (60.6, 61.4)56 (55.7, 56.3)69 (68.4, 69.6)63.5 (63.1, 63.9)54 (53.4, 54.6)50 (49.7, 50.3)
 High (≥15 years)16 (15.7, 16.3)16 (15.8, 16.2)16 (15.5, 16.5)19 (18.7, 19.3)17 (16.6, 17.4)13 (12.8, 13.2)
Missingn = 125n = 1557n = 26n = 492n = 99n = 1065
Population an = 37,940n = 113,820n = 17,186n = 51,558n = 20,754n = 62,262
Cohabitation65 (64.5, 65.5)60 (59.7, 60.3)70 (69.3, 70.7)66 (65.6, 66.4)62 (61.3, 62.7)56 (55.6, 56.4)
Missingn = 2n = 86n = 2n = 57n = 0n = 29
Employed40 (39.5, 40.5)38 (37.7, 38.3)75 (74.4, 75.6)72 (71.6, 72.4)11 (10.6, 11.4)11 (10.8, 11.2)
Missingn = 6n = 162n = 2n = 69n = 4n = 93
Sick leave b12 (11.7, 12.3)6 (5.9, 6.1)26 (25.3, 26.7)12 (11.7, 12.3)0.004 (−0.005, 0.013)0.003 (−0.001, 0.007)
 Days of sick leave **71 (159)59 (164)72 (161)59 (165)52 (55)33 (88)
Missingn = 2n = 86n = 2n = 57n = 0n = 29
Income quartile b
 Lowest (≤12,262)17 (16.6, 17.4)25 (24.8, 25.3)12 (11.5, 12.5)17 (16.7, 17.3)21 (20.5, 21.6)31 (30.6, 31.4)
 2nd (12,263-16,654)27 (26.6, 27.4)25.5 (25.3, 25.8)18 (17.4, 18.6)16.5 (16.2, 16.8)35 (34.4, 35.7)33 (32.6, 33.4)
 3rd (16,655-22,9624)28 (27.6, 28.5)23 (22.8, 23.2)32 (31.3, 32.7)29 (28.6, 29.4)24 (23.4, 24.6)19 (18.7, 19.3)
 Highest (≥22,963)28 (27.5, 28.5)26.5 (26.2, 26.8)38 (37.3, 38.7)37.5 (37.1, 37.9)20 (19.5, 20.5)17 (16.7, 17.3)
Income c **17,794 (10,574)16,578 (11,221)20,511 (10,410)20,131 (11,913)15,637 (8515)14,269 (7942)
Missingn = 2n = 86n = 2n = 57n = 0n = 29
Occupation d
 White-collar workers  49 (48.1, 50.0)56 (55.5, 56.5)  
 % with sick leave b  22 (20.9, 23.1)11 (10.5, 11.5)  
 Days of sick leave **  49 (119)45 (122)  
 Blue-collar workers  51 (50.1, 51.9)44 (43.5, 44.5)  
 % with sick leave b  37 (35.8, 38.2)18 (17.6, 18.6)  
 Days of sick leave **  59 (130)41 (107)  
Missing  n = 1569n = 4447  
  1. Description of socioeconomic indicators for the BOA population with knee OA and their reference groups from the general Swedish population, in total and grouped by age. Percentages and confidence interval (CI upper, lower) is reported, if no other information is given. *Mean (SD). **Median (IQR)
  2. aThe variables below were only analyzed among those individuals with their baseline year between 2008 and 2015
  3. bDuring the baseline year
  4. cThe amount is stated in Euro (€)
  5. dAmong those that were ≤ 65 years and categorized as employed at baseline