Table 1. Age and gender characteristics and CNTF concentrations (pg/ml) in the lacrimal fluid and blood serum of cataract patients and healthy controls.
| Variable | Cataract subgroup (n=33a) | Control group (n=29a) |
|---|---|---|
| Age | ||
| mean±SD |
67.8±4.0 |
67.5±4.7 |
| range |
61–75 |
61–78 |
| median (IQR) |
67.0 (65.0–71.0) |
66.0 (65.0–70.0) b |
| Sex | ||
| women, n (%) |
23 (70%) |
20 (69%) c |
| CNTF in lacrimal fluid | ||
| mean±SD |
41.5±19.0 |
40.1±12.1 |
| range |
4.6–92.4 |
16.8–66.8 |
| median (IQR) |
42.6 (28.2–52.5) |
40.2 (31.2–48.0) b |
| CNTF in blood serum | ||
| mean±SD |
5.87±4.95 |
5.78±2.80 |
| maximum |
26.50 |
12.10 |
| median (IQR) |
4.20 (2.60–6.60) |
4.90 (3.00–7.90) d |
| n / n censored | 32 / 6 | 28 / 5 |
The differences between cataract subgroup and control group are not significant (b Mann–Whitney U test, c Fisher's exact test; d two-sample maximum likelihood estimation test) SD – standard deviation; IQR – interquartile range; n censored - number of observations below the minimum quantifiable value 2.5 pg/ml a For CNTF in blood serum n is indicated in the last row.