Table 1

Demographics for the 3265 unique individuals newly diagnosed with RA in Sweden during 1996–2018, for the full cohort stratified per questionnaire

Full cohort2008/20091-year follow-up3-year follow-up
N sent questionnaireN/A280815931499
N respondedN/A234413331161
Participation rate (%)N/A838477
N included in study3265183712381056
N women (%)2345 (72)1322 (72)879 (71)773 (73)
Median year of diagnosis (Q1–Q3)2006
(2002–2011)
2002
(2000–2005)
2012
(2010–2015)
2011
(2009–2013)
Median age at diagnosis (Q1–Q3)56 (46–63)54 (44–61)60 (48–67)58 (47–65)
Median age at questionnaire (Q1–Q3)61 (50–67)61 (51–67)61 (49–68)61 (50–68)
Median time in bed (Q1–Q3)8.0 (7.5–9.0)8.0 (7.5–9.0)8.0 (7.3–9.0)8.0 (7.3–9.0)
Reported problems (%)
Total observations4131183712381056
Global sleep score1578 (38)759 (41)444 (36)375 (36)
Sleep problems1010 (25)502 (28)274 (22)234 (22)
Non-restorative sleep718 (18)349 (19)216 (18)153 (15)
Insomnia454 (11)219 (12)117 (9)118 (11)
Insufficient sleep398 (10)184 (10)102 (8)112 (11)
Sleep quality perceived poor775 (19)355 (19)214 (17)206 (20)
Sleep considered health problem809 (20)382 (21)232 (19)195 (19)
  • RA, rheumatoid arthritis.