Can non-participants in a follow-up be used to draw conclusions about incidences and prevalences in the full population invited at baseline? An investigation based on the Swedish MDC cohort

Table 2 Mortality and incidences (events per 10,000 person-years)

	Background population (n = 65,068)	Baseline non-participants (n = 38,594)	Baseline participants (n = 26,474)	Baseline participants, participating in re-examination (n = 21,868)	Baseline participants, not participating in re-examination (n = 4,606)	Substitution approach to reconstruct background population	Extrapolation approach to reconstruct background population
All-cause mortality	284	318	237	232	260	251	276
CVD mortality	97	110	78	75	91	86	100
Cancer mortality	88	93	80	80	79	79	78
Smoking-related mortality	33	39	24	24	28	27	31
Alcohol-related mortality	2.6	3.4	1.5	1.2	2.7	2.2	3.6
CVD incidence	178	191	158	155	174	167	184
Cancer incidence	284	279	291	296	266	276	248
Smoking-related incidence	76	89	59	57	70	66	78
Alcohol-related incidence	25	32	15	13	24	20	30
MSE			380	482	114	178	167

Individuals were followed from September 2001 until death or a disease outcome under consideration, first emigration, or at the latest until December 31, 2016. Incidence refers to death or hospital visit. MSE refers to mean squared error, calculated across all mortalities and disease incidences in the table, in a comparison with the background population

ISSN: 1471-2288