Analyzing musculoskeletal neck pain, measured as present pain and periods of pain, with three different regression models: a cohort study

Table 7 Ongoing pain: Markov transition models – analyses of a period of pain at one-year follow-up, for those with a period of pain at baseline.

Explanatory variables from baseline	Exposed cases	Simple model		Adjusted model			Proportion ratio
		Odds ratio	P-value	Odds ratio	P-value	95% CI
Women/men	106	1.9	0.027	1.6	0.157	0.837; 3.01	1.4
Overweight	14	0.87	0.848				0.96
Breakfast regularly	114	1.5	0.202				1.2
Snuff use	4	-	-				-
Smoking	12	1.4	0.231				1.1
Physical activity		0.98	0.684				0.99
High work/study demands (ref: not too high)	64		0.606
Not affecting home life	40	1.2					1.1
Affecting home life	32	1.3					1.2
High home life demands	5	-	-
Work/study time		0.98	0.095	0.98	0.093	0.962; 1.00	0.99
Good relationship with superiors	126	0.49	0.206				0.73
Good relationship with colleagues	129	1.4	0.545				1.2
Computer use pattern (ref: 0)	81		0.568
One 4 h period without a break	18	0.98					0.99
At least two 4 h periods without a break	37	0.75					0.86
Asthma	17	1.8	0.198	1.9	0.205	0.708; 5.00	1.3
Perceived stress	108	1.9	0.029	1.8	0.064	0.965; 3.50	1.4

All odds ratios are adjusted for gender (using men as the reference category). For the adjusted odds ratios both p-values and 95% confidence intervals (CI) are presented. The total number of respondents varied between N = 214–264, because of incomplete data. Estimates were not calculated for explanatory variables with fewer than five exposed cases.

ISSN: 1471-2474