Table 2.

Predicted number of fit notes by diagnostic group

Category	Groups	Selected subgroups	N people (%)	Predicted number of fit notes (NFN) (95% CI)	Predicted NFN adj* (95% CI)	Predicted NFN adj† (95% CI)
Mental health	Total		40 698	2.0 (1.8 to 2.1)	2.2 (2.1 to 2.3)	2.4 (2.3 to 2.5)
	Mental illness‡		5841 (14.4)	2.8 (2.6 to 3.0)	3.3 (3.1 to 3.5)	3.3 (3.1 to 3.4)
		Drug and alcohol	584 (1.4)	3.9 (3.6 to 4.3)	4.2 (3.8 to 4.6)	4.5 (4.1 to 4.8)
		Common mental disorders	4393 (10.8)	2.7 (2.5 to 2.9)	3.2 (3.1 to 3.4)	3.2 (3.1 to 3.3)
		Severe mental illness	374 (0.9)	2.7 (2.5 to 3.0)	3.0 (2.8 to 3.3)	2.6 (2.4 to 2.8)
	Stress		1037 (2.6)	2.1 (1.8 to 2.3)	2.5 (2.2 to 2.7)	2.7 (2.4 to 2.9)
	External stressor		845 (2.1)	2.2 (1.9 to 2.4)	2.3 (2.1 to 2.5)	2.5 (2.3 to 2.7)
Non-mental health	MSK		8366 (20.6)	2.2 (2.1 to 2.4)	2.3 (2.2 to 2.5)	2.6 (2.4 to 2.7)
	Fatigue		541 (1.3)	1.9 (1.6 to 2.2)	2.2 (2.0 to 2.5)	2.4 (2.1 to 2.7)
	Injury		2183 (5.4)	1.8 (1.6 to 1.9)	2.1 (1.9 to 2.2)	2.3 (2.2 to 2.5)
	Physical health		12 710 (31.2)	2.1 (1.9 to 2.3)	2.2 (2.1 to 2.3)	2.3 (2.2 to 2.4)
	Other		448 (1.1)	2.0 (1.8 to 2.3)	2.2 (2.0 to 2.4)	2.3 (2.1 to 2.5)
	Obstetrics		1372 (3.4)	1.4 (1.3 to 1.6)	2.0 (1.8 to 2.2)	2.2 (2.0 to 2.4)
	Infection		6726 (16.5)	1.5 (1.3 to 1.6)	1.8 (1.7 to 1.9)	1.9 (1.8 to 2.0)
	Surgery		629 (1.6)	1.5 (1.3 to 1.8)	1.6 (1.4 to 1.9)	1.8 (1.5 to 2.1)

*Adjusted for age, gender, ethnicity and deprivation.

†Adjusted for age, gender, ethnicity, deprivation and number of long-term conditions.

‡Made up of drug and alcohol, common mental disorders, severe mental illness, mental health treatment and mental health other.

MSK, Musculoskeletal condition.