Here's the cited paper [1]. The sample size is small with significant bias in the demographics and plenty of confounding factors that were not controlled. The results should be taken with a large grain of salt. IMO the title of OP should read: "Long-haul symptoms may affect majority of Covid-19 patients, UA study finds".
Highlights:
> 303 people who had a positive PCR or antigen test and were not hospitalized for their illness were surveyed.
> Participants had a mean age of 44 years (range 12-82 years), were mostly female (70%), non-Hispanic white (68%), with college or greater education (38%), and with at least one pre-existing chronic condition (67%). The most commonly reported pre-existing conditions were seasonal allergies (42%), asthma (16%) and hypertension (15%).
> At ≥ 30 days follow-up, 208 of 303 (68.7%) participants reported experiencing persistent symptoms.
> The 10 most commonly reported symptoms among individuals with PASC at >30 days post-positive test fatigue (37.5%); shortness of breath (37.5%); brain fog (30.8%); stress (30.8%); altered smell or taste (26.4%); body aches or muscle pains (26.0%); insomnia (22.1%); headaches (20.7%); joint pain (20.2%); and congestion or runny nose (19.2%)
[1] Post-acute sequelae of COVID-19 in a non-hospitalized cohort: results from the Arizona CoVHORT https://journals.plos.org/plosone/article?id=10.1371/journal...