Table S3.

Conditional probabilities of the symptoms given the 9 classes in the LCA model based on 13 more commonly measured symptoms including class size and expected number of symptoms

Profile	No symptoms	Headache	Fatigue	MS	GI	CP	MS +GS	MS + GI + GS	All symptoms
Class size	0.773	0.026	0.052	0.078	0.020	0.009	0.026	0.011	0.006
Expected number of symptoms	0.2	2.0	2.0	2.1	2.8	3.8	4.5	6.1	8.4
Back pain	0.02	0.20	0.11	0.61	0.13	0.24	0.84	0.74	0.75
Pain in leg/hip/knee	0.03	0.04	0.14	0.60	0.10	0.30	0.81	0.73	0.78
Neck/shoulder pain	0.03	0.47	0.16	0.44	0.10	0.22	0.91	0.80	0.84
Stomach pain	0.01	0.06	0.09	0.03	0.87	0.13	0.05	0.98	0.60
Indigestion	0.01	0.03	0.07	0.04	0.84	0.15	0.13	0.79	0.47
Nausea	0.00	0.05	0.05	0.00	0.16	0.09	0.04	0.23	0.34
Respiratory distress	0.01	0.02	0.10	0.05	0.05	0.67	0.13	0.17	0.63
Rapid heartbeat	0.00	0.01	0.04	0.00	0.01	0.57	0.04	0.00	0.84
Chest pain	0.00	0.00	0.01	0.01	0.01	0.49	0.02	0.03	0.59
Tiredness	0.02	0.25	0.64	0.14	0.28	0.47	0.63	0.69	0.77
Sleeplessness	0.01	0.04	0.36	0.09	0.14	0.17	0.39	0.38	0.67
Headache	0.02	0.74	0.18	0.04	0.10	0.09	0.35	0.34	0.61
Dizziness	0.00	0.09	0.09	0.02	0.04	0.17	0.15	0.19	0.51

Notes: The table shows the class size, expected number of symptoms, and symptom probability given the classes. Numbers in bold indicate a symptom probability of >0.30. The profiles are sorted according to the number of expected symptoms. The model includes a direct effect between dizziness and nausea. GS includes headache, tiredness, and sleeplessness. N=36,163.

Abbreviations: CP, cardiopulmonary; GI, gastrointestinal; GS, general symptoms; LCA, latent class analysis; MS, musculoskeletal.