Table 4.
Independent sample t tests on intention scores
| N† | Mean intention score | SD | t | p | |
| Heard of glaucoma | |||||
| Yes | 280 | 6.33 | 0.91 | 2.04 | 0.047** |
| No | 44 | 5.87 | 1.43 | ||
| Gender | |||||
| Male | 143 | 6.28 | 0.88 | 0.17 | 0.868 |
| Female | 177 | 6.30 | 1.05 | ||
| Ethnicity | |||||
| All black ethnicities | 33 | 5.80 | 1.51 | 2.05 | 0.048** |
| All other ethnicities | 281 | 6.35 | 0.87 | ||
| Diabetes | |||||
| Yes | 37 | 6.41 | 0.98 | 0.71 | 0.476 |
| No | 278 | 6.29 | 0.96 | ||
| Last eye test | |||||
| Within the last 3 years | 265 | 6.29 | 1.00 | 0.17 | 0.867 |
| More than 3 years ago/never | 56 | 6.31 | 0.86 | ||
| Short-sighted | |||||
| Yes | 144 | 6.30 | 0.91 | 0.84 | 0.402‡ |
| No | 107 | 6.19 | 1.14 | ||
| Don't know | 61 | 6.44 | 0.82 | ||
| Family history of glaucoma | |||||
| Yes | 53 | 6.43 | 0.69 | 1.11 | 0.269‡ |
| No | 172 | 6.27 | 1.00 | ||
| Don't know | 94 | 6.30 | 0.99 | ||
†
Numbers for each variable do not add up to 327 as some participants did not provide the information.
‡
The test was between ‘yes’ and ‘no’ with those answering ‘don't know’ left out. When the t tests were repeated with the variables coded dichotomously (yes vs ‘not yes’), the t tests remained non-significant.
**p<0.05.