Table 1 Study demographics.

From: Seasonal variations in presenting symptoms and signs of dry eye disease in Norway

 

Spring

Summer

Fall

Winter

Sum/mean

P-value

Number of patients

216

52

167

217

652

–

Age (years)

52.3 ± 16.9

53.9 ± 16.4

51.5 ± 17.1

51.5 ± 16.5

52.0 ± 16.8 (range 8–91)

0.80a

Female/male

124/92

13/39b

87/80

143/74c

367/285

< 0.001c

  1. Spring: March, April, and May; Summer: June, July, and August; Fall: September, October, and November; Winter: December, January, and February; aOne-way analysis of variance; ba higher proportion of male patients than expected (P < 0.001; Chi-square test); cChi-square test.
Back to article page