Table 3.

Mean probabilities of each pain type at each time point, by cluster.

	Persistent NCP	Migration from NCP to CRP/CWP	Persistent CRP or migration between CRP and NCP	Migration from CRP to CWP	Persistent CWP
No. (%)	1052 (57)	92 (5)	411 (22)	184 (10)	119 (6)
BL (1995)
NCP	0.888	0.973	0.287	0.188	0.001
CRP	0.103	0.025	0.571	0.589	0.008
CWP	0.008	0.002	0.141	0.223	0.991
T1 (1998)
NCP	0.882	0.845	0.272	0.127	0.002
CRP	0.109	0.143	0.577	0.559	0.026
CWP	0.009	0.012	0.151	0.314	0.972
T2 (2003)
NCP	0.863	0.338	0.271	0.067	0.008
CRP	0.126	0.547	0.578	0.454	0.098
CWP	0.010	0.115	0.152	0.479	0.894
T3 (2007)
NCP	0.838	0.135	0.290	0.043	0.015
CRP	0.149	0.567	0.570	0.358	0.170
CWP	0.013	0.298	0.140	0.599	0.815
T4 (2016)
NCP	0.728	0.101	0.415	0.018	0.013
CRP	0.248	0.527	0.500	0.202	0.153
CWP	0.024	0.372	0.086	0.779	0.834

CRP, chronic regional pain; CWP, chronic widespread pain; NCP, no chronic pain.