Skip to main content
. 2020 Oct 27;6(4):e20336. doi: 10.2196/20336

Table 1.

Demographic characteristics and social media usage of participants that completed the survey from January to June 2018.

Demographics Total sample (N=832) Comment Conditiona (n=414) No Comment Conditionb (n=418)
Age (years), mean (SD) 14.73 (1.67) 14.73 (1.68) 14.72 (1.66)
Sex, n (%)



Male 426 (51.2) 209 (50.5) 217 (51.9)

Female 406 (48.8) 205 (49.5) 201 (48.1)
Race, n (%)



Non-Latinx White 445 (53.5) 220 (53.1) 225 (53.8)

Black/African American 387 (46.6) 194 (46.9) 193 (46.2)
When do you use social media? n (%)



Right when you wake up 305 (36.7) 158 (38.2) 147 (35.2)

Before school 407 (48.9) 198 (47.8) 209 (50.0)

On the way to school 309 (37.2) 138 (33.3) 171 (40.9)

At school 258 (31.0) 133 (32.1) 125 (29.9)

During lunch 381 (45.8) 179 (43.2) 202 (48.3)

On the way home from school 323 (38.8) 147 (35.5) 176 (42.1)

After school 381 (67.8) 290 (70.1) 274 (65.6)

While doing homework 264 (31.7) 128 (30.9) 136 (32.5)

After doing homework 390 (46.9) 205 (49.5) 185 (44.3)

During dinner 158 (19.0) 87 (21.0) 71 (17.0)

Before bed 497 (59.7) 243 (58.7) 254 (60.8)

Right before going to sleep 234 (28.1) 114 (27.5) 120 (28.7)
Do you have…? [check all that apply] n (%)



Instagram 582 (70.0) 289 (69.1) 293 (70.8)

Facebook 710 (85.3) 355 (85.8) 355 (84.9)

Snapchat 410 (49.3) 201 (48.1) 209 (50.5)

Tumblr 71 (8.5) 41 (9.9) 30 (7.2)

Twitter 394 (47.4) 205 (49.5) 189 (45.2)
Average number of social accounts per participant based on responses to question above, mean (SD) 2.60 (1.20) 2.66 (1.17) 2.55 (1.19)
Have you ever made a purchase through social media? n (%) 167 (20.1) 87 (21.3) 80 (19.5)

aComment Condition included ads that were Photoshopped with comments from Instagram users. We included comments that were positive in nature (eg, “I love [brand name]! Please sponsor me! [heart emoji]”).

bNo Comment Condition included ads with the comment panel left blank, to appear as though Instagram users had not commented on the ad.