Table 2

Regression coefficients and odds ratios for both the dichotomous and continuous expert-based prognostic model for persistent shoulder pain

Expert-based model, dichotomous predictors

Expert-based model, continuous predictors

Predictors

categorya

β (SE)

OR (95% CI)

Category

β (SE)

OR (95% CI)


Symptom duration

>11 weeks

0.654 (0.183)

1.92 (1.34 - 2.75)

<6 weeksb

presence of the current shoulder pain

6-11 weeks

0.600 (0.236)

1.82 (1.15 - 2.89)

problem for a period of

>11 weeks

0.898 (0.213)

2.45 (1.61 - 3.73)

Pain catastrophizing

NRS (0-10) >4

0.549 (0.184)

1.73 (1.21 - 2.48)

NRS (0-10)

0.092 (0.032)

1.10 (1.03 - 1.17)

believing shoulder pain to be permanent rather than temporary

Symptom history

yes

0.188 (0.181)

1.21 (0.85 - 1.72)

yes

0.210 (0.185)

1.23 (0.86 - 1.77)

experienced earlier episode(s) of shoulder pain

Fear-avoidance beliefs

NRS (0-10) >7

-0.031 (0.180)

0.97 (0.68 - 1.38)

NRS (0-10)

-0.003 (0.028)

0.99 (0.94 - 1.05)

believing activity will worsen the shoulder pain

Coexisting neck pain

yes

-0.067 (0.207)

0.93 (0.62 - 1.40)

yes

-0.066 (0.211)

0.94 (0.62 - 1.41)

additional neck pain during the current shoulder pain period

Severity of shoulder disability

yes

0.130 (0.178)

1.14 (0.80 - 1.61)

score (0-20)

-0.032 (0.021)

0.97 (0.93 - 1.01)

being unable to perform normal daily activities in the past week or for a longer period of time

Multisite pain

yes

0.294 (0.219)

1.34 (0.87 - 2.06)

yes

0.378 (0.223)

1.46 (0.94 - 2.26)

pain or stiffness in other areas than the afflicted shoulder

Age

>52 years

0.275 (0.176)

1.32 (0.93 - 1.86)

years

0.015 (0.007)

1.01 (1.00 - 1.03)

Shoulder pain intensity

NRS (0-10) > 5

-0.388 (0.186)

0.68 (0.47 - 0.98)

NRS (0-10)

-0.150 (0.044)

0.86 (0.79 - 0.94)

shoulder pain experienced in the last 24 hours

Illness perceptions

yes

0.144 (0.177)

1.15 (0.81 - 1.63)

yes

0.148 (0.181)

1.16 (0.81 - 1.65)

believing there is not a lot the person can do to control the shoulder pain intercept

-1.078 (0.226)

-1.119 (0.565)


Predictors from the third Delphi round together with their suggested formulations as indicated by the expert panel

B = regression coefficient estimate

SE = standard error of regression coefficient estimate

OR = odds ratio

95% CI = 95% confidence interval for the odds ratio

a predictors were dichotomized by using median split value scores

b reference category

Vergouw et al. BMC Family Practice 2011 12:63   doi:10.1186/1471-2296-12-63

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