Table 1 Participant and Episode Characteristics.

From: Engaging a national-scale cohort of smart thermometer users in participatory surveillance

 

Participants

Episodes

Total No.

1,325,845

3,529,377

  

With reported symptoms

Without reported symptoms

p-value

No. (%)

 

1,735,805 (49.2)

1,793,572 (50.8)

 

Age, median [IQR]

26.0 [8.0, 42.0]

29.0 [9.0, 47.0]

31.0 [8.0, 54.0]

< 0.001

Age group, No. (%)

   

< 0.001

Age < = 12

466,471 (35.2)

578,366 (33.3)

584,087 (32.6)

 

12 < Age < = 18

96,970 (7.3)

99,430 (5.7)

84,433 (15.9)

 

18 < Age < = 35

306,762 (23.1)

352,661 (20.3)

355,597 (12.2)

 

35 < Age < = 50

233,932 (17.6)

334,864 (19.3)

265,992 (14.8)

 

50 < Age < = 65

130,779 (9.9)

243,977 (14.1)

218,664 (19.8)

 

Age > 65

90,931 (6.9)

126,507 (7.3)

284,799 (4.7)

 

Gender, No. (%)

   

< 0.001

Female

721,136 (54.4)

979,045 (56.4)

981,214 (54.7)

 

Male

542,899 (40.9)

699,601 (40.3)

726,500 (40.5)

 

Other

11,168 (0.8)

9,931 (0.6)

17,699 (1.0)

 

Unknown

50,642 (3.8)

47,228 (2.7)

68,159 (3.8)

 

US geographic division, No. (%)

   

< 0.001

East North Central

167,838 (12.7)

221,272 (12.7)

237,136 (13.2)

 

East South Central

53,382 (4.4)

68,009 (3.9)

73,008 (4.1)

 

Middle Atlantic

195,853 (14.8)

262,848 (15.1)

262,817 (14.7)

 

Mountain

84,587 (6.4)

113,256 (6.5)

118,127 (6.6)

 

New England

92,265 (7.0)

127,898 (7.4)

129,475 (7.2)

 

Pacific

289,331 (21.8)

380,675 (21.9)

379,433 (21.2)

 

South Atlantic

203,379 (15.3)

270,384 (15.6)

293,350 (16.4)

 

West North Central

81,923 (6.2)

107,566 (6.2)

110,831 (6.2)

 

West South Central

152,287 (11.5)

183,897 (10.6)

189,395 (10.6)

 

Urban/rural designation, No. (%)

   

< 0.001

Large central metro

389,547 (32.2)

553,132 (33.9)

557,132 (33.5)

 

Large fringe metro

307,975 (25.5)

425,686 (26.1)

449,839 (27.0)

 

Medium metro

275,533 (22.8)

357,123 (21.9)

366,183 (22.0)

 

Small metro

102,789 (8.5)

132,404 (8.1)

133,712 (8.0)

 

Micropolitan

86,276 (7.1)

108,792 (6.7)

102,803 (6.2)

 

Noncore

46,423 (3.8)

55,424 (3.4)

54,110 (3.3)

 

Household composition, No. (%)

   

<0.001

Adult only

540,040 (40.7)

758,882 (43.7)

937,295 (52.3)

 

Adult and child

462,801 (34.9)

638,153 (36.8)

435,655 (24.3)

 

Child only

323,004 (24.4)

338,770 (19.5)

420,622 (23.5)

 
  1. Differences in medians were assessed with the Kruskal-Wallis test. Chi-square test was used for categorical variables. Households with children-only profiles were presumed to have adults in the household who were not using the thermometer.