
Control (n = 27)

Localised neck pain (NP, n = 35)

Chronic widespread pain (CWP, n = 15)

Pvalue


Age [years]

52 (25–61)

49 (26–64)

58 (41–65)

0.029^{a}

Height [cm]

166 (158–180)

167 (156–177)

168 (153–177) ^{−2}

0.73^{a}

Weight [kg]

64 (50–88) ^{1}

64 (51–100) ^{−1}

67 (55–110) ^{−2}

0.82^{a}

BMI [kg x m^{2}]

23 (19–31) ^{−1}

24 (19–32) ^{−1}

24 (21–38) ^{−2}

0.59^{a}

NRS_{day}



2 (1–6)

3 (1–8)

0.28^{b}

NRS_{week}



4 (1–8)

6 (2–7)

0.016^{b}

Pain duration [months]



42 (5–288) ^{−1}

222 (120–420) ^{−1}

<0.0001^{b}

Nicotine users [No.]

4 (15 %)

4 (11 %)

3 (20 %)

0.73^{c}

Sampling time^{d}

15 M, 12A

17 M, 17A^{−1}

5 M, 9A^{−1}

0.48^{c}

 In the table, the superscripts −1 and −2 indicate the number of missing data for the variable and group in question. Thus, for example, information on body weight was only available for 26 controls

BMI Body mass index, NRS numerical rating scale 0–10. Statistical tests, pvalue < 0.05 is considered significant

^{a} KruskalWallis test, ^{b} Mann–WhitneyU test, ^{c}Chi squared test, excluding the cases when sampling time was not known. ^{d}Sampling time is shown as morning (M) and afternoon (A)