Incidence, remission, and persistence of Raynaud’s phenomenon in the general population of northern Sweden: a prospective study

Table 3 Prevalence, incidence, remission, and persistence proportions for Raynaud’s phenomenon, separated by gender

Measure	Women ^a	Men ^a	Gender difference ^b
Measure	N (%)	N (%)	p value
Baseline RP	396/2703 (14.7)	265/2314 (11.5)	< 0.01
Incident RP ^c	96/2307 (4.2)	112/2049 (5.5)	0.04
(per year) ^d	16 (0.7)	19 (0.9)
Remitted RP ^e	104/396 (26.3)	88/265 (33.2)	0.05
(per year) ^d	17 (4.4)	15 (5.5)
Persistent RP ^f	289/396 (73.0)	175/265 (66.0)

RP Raynaud’s phenomenon
^aThe figures are affected by item non-response, and absolute percentages are presented
^bPearson’s χ² test for women versus men
^cNumber of incident cases divided by subjects at risk (total sample minus number of subjects with RP at baseline)
^dCumulative estimate divided by six
^eNumber of remitted cases (reporting RP at baseline and negating RP at follow-up), divided by the number of subjects with RP at baseline
^fNumber of persistent cases (reporting RP at baseline and follow-up) divided by the number of subjects with RP at baseline

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