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. 2021 Jul 8;23(7):e28346. doi: 10.2196/28346

Table 2.

Names, exemplary words, and unstandardized prevalences of topics (n=21) and LIWC categories (n=15) in a corpus of comment threads from the ED community on the social media website Reddit.

Name Exemplary wordsa Prevalence in corpusb, mean (SD)


Prepandemic threads Midpandemic threads
Topics

Affect feel hate brain bad just like els 11.16 (5.33) 11.58 (5.49)

Social support hope happi deserv thank proud better strong 7.2 (5.67) 8.33 (6.69)

Time back month ve start ago sinc now 6.81 (4.12) 6.68 (4.09)

Binge/restrict bing fast tomorrow day restrict urg christma 6.91 (6.60) 5.76 (5.68)

Meals hungri eat meal food dinner hunger lunch 5.98 (5.33) 6.30 (5.87)

Romantic relationships friend tell boyfriend said ask told partner 5.64 (5.26) 6.12 (5.77)

Purging ive im throat cant ur vomit spit 6.49 (6.45) 5.22 (5.76)

Weight loss/gain gain scale pound lbs lose weight maintain 5.42 (7.55) 5.62 (7.62)

Domestic life home hous room kitchen money groceri car 4.21 (5.61) 4.26 (5.99)

Mental health disord anorexia behavior valid mental ed behaviour 3.80 (4.30) 4.66 (4.86)

EDc treatment doctor hospit treatment appoint medic inpati therapist 3.81 (7.15) 4.16 (7.23)

Exercise burn sleep gym workout faint exercis dizzi 3.93 (5.87) 3.94 (6.13)

Low calorie foods veggi vegan salad veget soup carrot sauc 3.84 (8.43) 3.45 (7.90)

Body dysmorphia mirror attract photo skinnier compliment skinni thinner 3.7 (5.71) 3.74 (5.79)

Drinks drink coffe tea soda coke caffein sweeten 4.08 (9.60) 3.14 (8.16)

Binge foods cooki chocol peanut cake cream chip pizza 3.91 (7.56) 3.20 (6.81)

EDs and society peopl cultur judg societi shame agre opinion 3.07 (4.08) 3.66 (4.69)

Entertainment movi song hair scene mukbang video film 2.89 (6.68) 2.68 (6.21)

Appearance cloth wear hip boob jean waist shirt 2.95 (7.43) 2.47 (6.85)

ED communities sub reddit post subreddit pro account delet 2.15 (4.86) 2.69 (5.98)

Development of ED sister parent grade mom school teacher mum 2.04 (2.99) 2.32 (3.29)
LIWCd categories

Positive emotion love, nice, sweet 3.41 (2.70) 3.40 (2.54)

Negative emotion hurt, ugly, nasty 3.64 (2.66) 3.57 (2.33)

Anxiety worried, fearful 0.58 (0.95) 0.67 (0.94)

Sadness crying, grief, sad 0.87 (1.27) 0.83 (1.10)

Cognitive processes cause, know, ought 13.45 (4.70) 14.26 (4.27)

Insight think, know 2.48 (1.92) 2.69 (1.74)

Question marks ? 1.41 (3.55) 0.99 (1.99)

Exclamation marks ! 1.06 (2.85) 0.94 (2.74)

Social words mate, talk, they 6.30 (4.57) 6.76 (4.49)

First-person singular I, me, mine 10.08 (4.07) 10.01 (3.78)

Third-person singular she, her, him 0.59 (1.45) 0.66 (1.51)

Body cheek, hands, spit 1.41 (2.10) 1.28 (1.70)

Health clinic, flu, pill 1.67 (2.13) 1.60 (1.73)

Ingestion dish, eat, pizza 4.18 (3.72) 3.88 (3.36)

Death bury, coffin, kill 0.12 (0.51) 0.10 (0.40)

aFor topics, exemplary words are the most characteristic words as measured by the FREX metric [37]. For LIWC categories, exemplary words are taken from the LIWC manual [40].

bFor topics, prevalence in corpus is measured as the percentage of each topic in the corpus. For LIWC categories, it represents the relative percentage of category words per thread.

cED: eating disorder.

dLIWC: Linguistic Inquiry and Word Count.