Table 2.
Top 10 weighted unigrams and bigrams for r/birthcontrol posts by flair group based on Term Frequency-Inverse Document Frequency analysis (February 4, 2016, to December 31, 2020; N=68,824).
| Rank | SideEffects!? | MistakeorRisk | Experience | Howto? | WhichMethod? | |||||||||
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Unigram | Bigram | Unigram | Bigram | Unigram | Bigram | Unigram | Bigram | Unigram | Bigram | ||||
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| 1 | Period | Birth control | Pill | Birth control | Period | Birth control | Pill | Birth control | Pill | Birth control | ||||
| 2 | Pill | Feel like | Day | Take pill | Pill | Copper IUDa | Period | Take pill | IUD | Copper IUD | ||||
| 3 | Day | Take pill | Period | Unprotected sex | IUD | Feel like | Day | Start take | Period | Sex drive | ||||
| 4 | Month | Week ago | Take | Miss pill | Get | Get IUD | Start | New pack | Control | Weight gain | ||||
| 5 | Get | Month ago | Week | Pregnancy test | Day | Take pill | Take | Active pill | Birth | Feel like | ||||
| 6 | Week | Copper IUD | Sex | New pack | Experience | Control pill | Week | Start new | Want | Take pill | ||||
| 7 | Bleed | Get period | Time | Take plan | Month | Get period | Pack | Day period | Get | Control pill | ||||
| 8 | Start | Day ago | Start | Pill day | Like | Sex drive | Month | Placebo pill | Year | Mood swing | ||||
| 9 | Take | Start take | Get | Get pregnant | Cramp | Month ago | Time | Control pill | Like | Mini pill | ||||
| 10 | IUD | Control pill | Month | Control pill | Take | Week ago | Control | Placebo week | Month | Hormonal IUD | ||||
aIUD: intrauterine device.