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. 2010 Nov 29;5(11):e14118. doi: 10.1371/journal.pone.0014118

Table 4. Content, Qualifiers, and Links of Manually Coded H1N1 Tweets.

------------------------ Type of Tweets, No. (%) ------------------------
May 11(n = 600) June 8(n = 600) July 6(n = 600) Aug 3(n = 600) Aug 31(n = 600) Sept 28a(n = 595) Oct 26(n = 600) Nov 23(n = 600) Dec 21(n = 600) Total (5395) p Value, trend
Content
Resources 291 (49) 330 (55) 252 (42) 284 (47) 352 (59) 302 (51) 296 (49) 366 (61) 367 (61) 2840 (53) <.001 *
Personal Experiences 107 (18) 119 (20) 140 (23) 150 (25) 94 (16) 158 (27) 176 (29) 138 (23) 132 (22) 1214 (23) .01 *
Personal Opinion 81 (14) 80 (14) 147 (25) 93 (16) 76 (13) 82 (14) 78 (13) 51 (9) 52 (9) 740 (14) <.001 *
Jokes 100 (17) 53 (9) 50 (8) 52 (9) 45 (8) 28 (5) 28 (5) 30 (5) 35 (6) 421 (8) <.001 *
Marketing 7 (1) 10 (2) 6 (1) 15 (3) 10 (2) 2 (0) 2 (0) 9 (2) 11 (2) 72 (1) .72
Spam 14 (2) 8 (1) 5 (1) 6 (1) 23 (4) 23 (4) 20 (3) 6 (1) 3 (1) 108 (2) .91
Qualifiers b
Humour 129 (22) 81 (14) 72 (12) 87 (15) 59 (10) 65 (11) 63 (11) 58 (10) 73 (12) 687 (13) <.001 *
Relief 13 (2) 3 (1) 6 (1) 10 (2) 7 (1) 5 (1) 15 (3) 9 (2) 13 (2) 81 (2) .18
Downplayed Risk 17 (3) 14 (2) 10 (2) 19 (3) 7 (1) 7 (1) 20 (3) 11 (2) 1 (0) 106 (2) .014 *
Concern 47 (8) 57 (10) 105 (18) 85 (14) 69 (12) 81 (14) 76 (13) 57 (10) 56 (9) 633 (12) .677
Frustration 25 (4) 27 (5) 29 (5) 32 (5) 23 (4) 33 (6) 18 (3) 13 (2) 12 (2) 212 (4) .002 *
Misinform. 23 (4) 13 (2) 13 (2) 55 (9) 37 (6) 34 (6) 28 (5) 26 (4) 14 (2) 243 (5) .756
Question 66 (11) 60 (10) 76 (13) 59 (10) 63 (11) 47 (8) 84 (14) 49 (8) 51 (9) 555 (10) .125
Links c
News Websites 141 (24) 159 (27) 119 (20) 142 (24) 172 (29) 140 (24) 138 (23) 126 (21) 116 (19) 1253 (23) .04 *
News Blogs, Feeds, or Niche News 72 (12) 76 (13) 40 (7) 62 (10) 76 (13) 47 (8) 69 (12) 79 (13) 111 (19) 632 (12) .001 *
Government or Public Health 9 (2) 8 (1) 11 (2) 9 (2) 5 (1) 10 (2) 11 (2) 8 (1) 10 (2) 81 (2) .826
Personal Blogs 8 (1) 14 (2) 20 (3) 7 (1) 11 (2) 5 (1) 16 (3) 12 (2) 6 (1) 99 (2) .348
Social Networks 6 (1) 13 (2) 9 (2) 12 (2) 6 (1) 19 (3) 26 (4) 19 (3) 22 (4) 132 (2) <.001 *
Online Stores 12 (2) 1 (0) 7 (1) 17 (3) 8 (1) 1 (0) 1 (0) 6 (1) 13 (2) 66 (1) .668
Other 39 (7) 33 (6) 41 (7) 48 (8) 75 (13) 73 (12) 45 (8) 92 (15) 64 (11) 510 (10) <.001 *
No Reference 23 (4) 56 (9) 78 (13) 50 (8) 32 (5) 26 (4) 19 (3) 25 (4) 17 (3) 326 (6) <.001 *
Not Accessible 37 (6) 30 (5) 13 (2) 14 (2) 29 (5) 20 (3) 14 (2) 33 (6) 45 (8) 235 (4) .20
a

2300 hrs on Sept. 28 had only 20 eligible tweets.

b

The percent total will not equal 100% as not all tweets had qualifiers and tweets with multiple qualifiers were coded multiple times. Approximately 40% of tweets contained qualifiers.

c

The total will not equal to 100% as not all tweets had links. Approximately 60% of tweets contained links.

*chi-square test for trend significant at p<0.05.