Table 4.

Synergistic interaction effects between job control and social support at work on general psychological distress in the Swedish male (n = 1,035) and female (n = 905) workers

Sex	Job control	GHQ case, % (n)		Odds ratio (95% CI)a		Synergy index (95% CI; 80% CI)
		Social support at work
		High	Low
Men	High	7.8 (371)	12.4 (314)	1.00	1.50 (0.88, 2.58)
	Low	8.7 (149)	17.4 (201)	1.31 (0.63, 2.71)	2.37 (1.34, 4.18)	1.68 (0.36–7.77; 0.90–3.15)
Women	High	10.9 (247)	22.2 (158)	1.00	1.85 (1.02, 3.37)
	Low	14.4 (209)	28.9 (291)	1.67 (0.90, 3.09)	3.78 (2.21, 6.46)	1.83 (0.74–4.52; 1.25–2.65)

CI confidence interval

^aPsychological job demands, consistent and changed history of psychosocial work characteristics, age, education, origin of country, marital status, family-to-conflict, number of days on sick leave, stress from outside-work problems, and worry due to family members were all controlled for