Pain intensity, disability, quality of life and sick leave,
Table II
After 12 months, there was a highly significant mean
decrease in pain, disability (ODI) and also a
significant increase in quality of life (EuroQol 5D),
from median 0.29 before surgery to median 0.74.
Preoperatively, 35 patients (63 %) were on sick
leave, compared to 9 patients (16 %) 12 months after
surgery, which was a highly statistically significant
decrease of the proportion of patients being on sick
leave.
Predictors of pain, disability and quality of life and being
on sick leave at 12 months after surgery, Table III
Scoring low on the item ‘In your estimation, what are
the chances that you will be working in 3 months?’
was significantly predictive for all outcome variables,
with the highest odds ratio (OR) for being on sick
leave 12 months after surgery (OR¼19.5).
Of the 13 patients who preoperatively had scored
low chance of return to work within 3 months, 46%
(6 patients) were still on sick leave 12 months after
surgery.
The strongest predictor for low quality of life 12
months after surgery was high scores of fear
avoidance beliefs, (OR¼6.6).
It should be noted that the confidence intervals are
quite wide for the predictors meaning that the
precision of the OR estimates are uncertain which
probably is due to the small sample size.
Being a woman was also predictive for low quality
of life 12 months after surgery, (OR¼6.0).
The predictive value of the regression model
explained 26–40% of the variance in the outcome
variables, pain (leg pain 26%, back pain 24%),
disability (26%), quality of life (35%) and sick-leave
(40%). Almost 40% of the variation in sick-leave
12 months after surgery could be explained by preoperatively low scores of the item chance to
return to work within 3 months
Pain intensity, disability, quality of life and sick leave,Table IIAfter 12 months, there was a highly significant meandecrease in pain, disability (ODI) and also asignificant increase in quality of life (EuroQol 5D),from median 0.29 before surgery to median 0.74.Preoperatively, 35 patients (63 %) were on sickleave, compared to 9 patients (16 %) 12 months aftersurgery, which was a highly statistically significantdecrease of the proportion of patients being on sickleave.Predictors of pain, disability and quality of life and beingon sick leave at 12 months after surgery, Table IIIScoring low on the item ‘In your estimation, what arethe chances that you will be working in 3 months?’was significantly predictive for all outcome variables,with the highest odds ratio (OR) for being on sickleave 12 months after surgery (OR¼19.5).Of the 13 patients who preoperatively had scoredlow chance of return to work within 3 months, 46%(6 patients) were still on sick leave 12 months aftersurgery.The strongest predictor for low quality of life 12months after surgery was high scores of fearavoidance beliefs, (OR¼6.6).It should be noted that the confidence intervals arequite wide for the predictors meaning that theprecision of the OR estimates are uncertain whichprobably is due to the small sample size.Being a woman was also predictive for low qualityof life 12 months after surgery, (OR¼6.0).The predictive value of the regression modelอธิบาย 26 – 40% ของความแปรปรวนในผลตัวแปร อาการปวด (ปวดขา 26% ปวด 24%),พิการ (26%), คุณภาพชีวิต (35%) และ ลาป่วย(40%) เกือบ 40% ของความผันแปรในการลาป่วย12 เดือนหลังจากผ่าตัดอาจจะอธิบาย โดยคะแนนต่ำสุด preoperatively ของรายการโอกาสกลับไปทำงานภายใน 3 เดือน
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