“At ABC, CBS and NBC combined, the study shows that men report three times as much of the news as do women. In addition, on-air reporting done by female reporters and correspondents has also declined. Slightly more than 25 percent of broadcast news reports in 2016 were submitted by women. The figure was 32 percent when the Women’s Media Center published its 2015 report.

“Here are the stats cited by the Women’s Media Center report:

• ABC World News Tonight: 12 percent female
• CBS Evening News: 32 percent female
• NBC Nightly News: 32 percent female

“Andrew Tyndall, who tracks air time on the three evening newscasts for his Tyndall Report, argues that the above percentages are slightly misleading, though his general conclusion is similar: Women are under-represented on nightly newscasts.

“In his study, Tyndall monitored an entire year of nightly newscasts, while the Women’s Media Center study looked at just three months. Additionally, Tyndall Report counted specific minutes of on-air coverage, while the WMC study counted the bylines. The Tyndall Report looked solely at on-air correspondents and reporters, while the WMC study included producer credits.

“Here are Tyndall’s stats:

• ABC World News Tonight: 32 percent female (1097 minutes out of 3409)
• CBS Evening News: 32 percent female (1327 minutes out of 4148)
• NBC Nightly News: 44 percent female (1880 minutes out of 4272)”