Table 4

Crude and adjusted ORs of attrition in relation to psychological and physical illnesses and other variables measured at baseline

Variables	Attrition at 6 months (model 1)^*				Not located at 6 months (model 4)^†				Attrition at 12 months (model 2)^‡				Attrition at 12 months (model 6)^§
	Unadjusted OR		Adjusted OR		Unadjusted OR		Adjusted OR		Unadjusted OR		Adjusted OR		Unadjusted OR		Adjusted OR
	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI
Major depression at baseline	1.08	0.90 to 1.29	0.94	0.68 to 1.29	1.40	1.01 to 1.95	1.28	0.80 to 2.03	1.14	0.96 to 1.36	1.07	0.79 to 1.45	1.23	0.93 to 1.62	0.88	0.58 to 1.33
Anxiety
Panic attack	1.08	0.84 to 1.39	1.23	0.84 to 1.79	1.18	0.73 to 1.90			1.08	0.85 to 1.37	1.16	0.80 to 1.67	0.97	0.64 to 1.47
Generalised anxiety disorder	1.08	0.84 to 1.39	1.17	0.78 to 1.78	0.88	0.53 to 1.46			1.01	0.79 to 1.29	0.94	0.62 to 1.42	0.96	0.62 to 1.45
Other anxiety disorders	0.96	0.74 to 1.25	0.99	0.66 to 1.48	1.23	0.76 to 1.98			1.04	0.81 to 1.33	0.98	0.66 to 1.47	1.23	0.83 to 1.84
Alcohol problems
No problem	1.00				1.00		1.00		1.00				1.00		1.00
Misuse	1.40	1.05 to 1.86	0.76	0.46 to 1.27	1.67	0.98 to 2.84	0.79	0.35 to 1.79	1.66	1.26 to 2.18	0.90	0.55 to 1.46	1.46	0.94 to 2.29	0.85	0.43 to 1.68
Dependant	1.49	0.89 to 2.50	1.92	0.83 to 4.43	0.94	0.31 to 2.83	0.66	0.13 to 3.32	2.17	1.31 to 3.59	2.76	1.18 to 6.44	2.17	0.99 to 4.71	2.12	0.75 to 6.02
Long-standing illness, disability or infirmity	0.96	0.86 to 1.09	0.98	0.79 to 1.22	0.85	0.67 to 1.08	0.96	0.68 to 1.36	0.96	0.85 to 1.09	1.05	0.85 to 1.30	0.92	0.76 to 1.12
Quality of life (SF-12)
Physical (range 0–100)	1.001	0.995 to 1.006	0.993	0.984 to 1.003	1.011	1.001 to 1.022	1.001	0.991 to 1.021	0.998	0.993 to 1.004	0.992	0.983 to 1.002	0.993	0.985 to 1.002	0.990	0.978 to 1.003
Mental (range 0–100)	0.994	0.989 to 0.999	0.997	0.988 to 1.006	1.000	0.991 to 1.010			0.994	0.990 to 0.999	0.997	0.988 to 1.006	0.995	0.986 to 1.010	0.998	0.986 to 1.003
Lifetime depression	0.87	0.77 to 0.98	0.82	0.67 to 0.99	0.73	0.58 to 0.92	0.60	0.43 to 0.84	0.93	0.83 to 1.05	0.90	0.74 to 1.10	1.08	0.89 to 1.32	1.11	0.81 to 1.53
Serious psychological problems in family members
Father	0.96	0.78 to 1.24	0.78	0.53 to 1.14	0.70	0.42 to 1.15	0.36	0.16 to 0.82	1.00	0.80 to 1.25	0.85	0.59 to 1.23	1.01	0.71 to 1.45
Mother	0.99	0.85 to 1.17	0.99	0.77 to 1.28	1.07	0.79 to 1.46			0.95	0.81 to 1.11	0.98	0.77 to 1.26	1.08	0.84 to 1.39
Brothers	1.05	0.86 to 1.29	0.99	0.72 to 1.35	1.10	0.76 to 1.61			0.97	0.80 to 1.18	0.94	0.69 to 1.28	0.97	0.68 to 1.36
Sisters	0.91	0.76 to 1.09	1.08	0.83 to 1.40	0.70	0.49 to 1.01	0.75	0.47 to 1.20	0.90	0.75 to 1.06	1.14	0.89 to 1.48	0.90	0.66 to 1.17	1.00	0.68 to 1.48
Family suicide
Father	0.63	0.26 to 1.52	0.49	0.13 to 1.86	1.09	0.30 to 3.98			0.55	0.23 to 1.32	0.40	0.10 to 1.49	0.54	0.12 to 2.44
Mother	1.18	0.27 to 5.19	0.75	0.07 to 8.26	2.10	0.21 to 21.2			0.99	0.26 to 4.36	0.54	0.04 to 6.47	1.88	0.20 to 18.0
Brothers	1.21	0.62 to 2.37	1.43	0.57 to 3.59	1.16	0.32 to 4.23			1.00	0.51 to 1.95	1.36	0.55 to 3.36	0.70	0.20 to 2.37
Sisters	0.91	0.33 to 2.54	1.32	0.32 to 5.50	0.67	0.08 to 5.68			0.42	0.13 to 1.32	0.31	0.06 to 1.73	1.10	0.23 to 5.21
Religious/spiritual beliefs
Religious	1.00				1.00				1.00				1.00		1.00
Spiritual	1.15	0.97 to 1.36	1.21	0.95 to 1.53	0.86	0.62 to 1.18			1.15	0.98 to 1.35	1.15	0.91 to 1.46	1.12	0.86 to 1.45	0.62	0.43 to 0.88
Neither religious nor spiritual	1.14	0.97 to 1.35	1.01	0.60 to 1.71	1.11	0.83 to 1.50			1.21	1.03 to 1.42	0.92	0.55 to 1.51	1.18	0.91 to 1.54	0.98	0.69 to 1.40
Higher religious/spiritual intensity^¶	1.02	0.97 to 1.07	1.09	1.02 to 1.17	0.98	0.89 to 1.07			1.04	0.99 to 1.09	1.18	1.10 to 1.26	1.00	0.93 to 1.08	1.07	0.90 to 1.29
Discrimination experienced^**
0	1.00		1.00		1.00		1.00		1.00		1.00		1.00		1.00
1	1.30	1.05 to 1.60	1.34	1.00 to 1.90	1.84	1.29 to 2.62	1.62	1.10 to 2.40	1.35	1.11 to 1.66	1.16	0.82 to 1.64	1.35	0.96 to 1.89	1.16	0.72 to 1.86
2	1.35	0.91 to 2.03	1.21	0.66 to 2.24	1.70	0.83 to 3.49	1.55	0.72 to 3.34	1.61	1.09 to 2.38	1.61	0.89 to 2.91	2.03	1.14 to 3.62	1.18	0.53 to 2.61
>2	0.85	0.47 to 1.93	0.20	0.02 to 1.91	1.12	0.25 to 5.03	0.68	0.14 to 3.28	1.13	0.56 to 2.19	0.26	0.05 to 1.40	1.88	0.75 to 4.72	1.24	0.81 to 1.15
Childhood abuse
Physical^††	1.03	0.96 to 1.11	1.04	0.90 to 1.20	1.12	0.98 to 1.27	1.10	0.87 to 1.39	1.09	1.02 to 1.17	1.07	0.94 to 1.24	1.14	1.02 to 1.27	0.96	0.81 to 1.15
Psychological^††	1.01	0.95 to 1.07	0.94	0.83 to 1.07	1.08	0.97 to 1.20	1.06	0.87 to 1.30	1.02	0.96 to 1.08	0.90	0.80 to 1.01	1.01	0.92 to 1.11
Sexual^††	0.85	0.69 to 1.03	0.81	0.59 to 1.13	0.75	0.49 to 1.15	0.67	0.37 to 1.19	1.08	0.90 to 1.28	1.02	0.77 to 1.35	1.44	1.16 to 1.79	1.32	0.99 to 1.77

Multilevel logistic regression.
↵* Interviewed=3804/not interviewed=1638.
↵† Interviewed=3804/not located (313) + moved (57)=370.
↵‡ Interviewed=3567/not interviewed=1875.
↵§ Interviewed=3300/not interviewed=504.
↵¶ Range from 1 (weakly held) to 6 (strongly held).
↵** The type of discrimination included skin colour or ethnicity, sex, age, appearance, handicap or sexual orientation.
↵†† Codes 1 (never), 2 (seldom), 3 (sometimes), 4 (often), 5 (frequently).
Figures in bold p<0.05.