Trajectories of pain in adolescents: A prospective cohort study

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Table 3

Characteristics of clusters at 3 year follow-up and change from baseline.

	Somatization		Depression		BMI		Pubertal Development Scale
	Mean score	% change from baseline	Mean score	% change from baseline	Mean	% change from baseline	Mean	% change from baseline
Back pain clusters
1	0.29	−27%	0.45	−25%	21.66	11%	3.04	50%
2	0.50	−35%	0.65	−27%	21.79	12%	3.12	46%
3	0.58	10%	0.84	16%	23.11	22%	3.13	40%
4	0.68	−28%	1.01	−3%	22.18	14%	3.34	49%
5	0.32	−31%	0.58	−13%	22.38	12%	3.12	54%
6	0.53	−45%	1.01	−8%	21.42	9%	3.26	34%
p-value	<0.001		<0.001		0.162		0.009

Facial pain clusters
1	0.32	−27%	0.48	−22%	21.69	12%	3.07	50%
2	0.51	−31%	0.77	−14%	22.99	12%	3.10	35%
3	0.43	−38%	0.70	−29%	21.49	14%	3.19	49%
4	0.88	−12%	1.19	−5%	22.44	19%	3.31	64%
p-value	<0.001		<0.001		0.008		0.172

Headache clusters
1	0.29	−27%	0.44	−25%	21.63	12%	3.03	50%
2	0.44	−38%	0.69	−24%	21.76	10%	3.12	47%
3	0.51	−17%	0.69	−17%	22.67	12%	3.30	43%
4	0.64	−20%	1.07	8%	22.41	17%	3.20	49%
p-value	<0.001		<0.001		0.062		<0.001

Stomach pain clusters
1	0.29	−27%	0.46	−22%	21.64	11%	3.05	50%
2	0.48	−28%	0.65	−28%	22.67	15%	3.21	46%
3	0.59	−10%	0.78	−11%	22.24	13%	3.17	44%
4	0.55	−42%	0.91	−19%	21.52	13%	3.12	47%
p-value	<0.001		<0.001		0.018		0.01

Total sample	0.34	−27%	0.53	−21%	21.78	12%	3.07	49%

BMI, Body Mass Index.