Table 2

Results of the methodological quality assessment

Cohort (first author)	Study design		Exposure and outcome assessment						Data analysis
Cohort (first author)	Participation rate	Response at follow-up	Duration computer use	Ergonomic factors	Psychosocial factors	Physical factors leisure time	Exposure change	Outcome	Statistical model	Confounding	Statistical power	Score* (%)
BIT, Behavioural Inattention Test; NUDATA, Neck and Upper extremity Disorders Among Technical Assistants.
*The percentage of positive items over the total number of items.
†+, positive; −, negative; ?, unclear (insufficient information available).
BIT
Jensen²⁰	?†	?	?	?	?	−	+	+	+	+	+	45
Juul-Kristensen²¹	?	?	?	?	?	−	+	+	+	+	+	45
NUDATA
Andersen²²	?	+	?	?	?	+	+	+	+	+	+	64
Kryger²³	?	+	?	?	?	+	?	+	+	+	+	55
Brandt²⁴	?	+	?	?	?	+	?	+	+	+	+	55
Lassen²⁵	?	+	?	?	?	+	?	+	+	+	+	55
Bergqvist et al
Bergqvist¹⁹	+	+	?	?	?	?	+	?	+	−	+	45
Marcus et al
Marcus²⁶	+	+	?	+	?	+	+	?	+	+	+	73
Korhonen et al
Korhonen²⁷	+	?	?	?	?	+	?	+	+	+	+	55
Positive (%)	33	67	0	11	0	67	56	78	100	89	100