Table 2 Results of item analysis. Number and percentage of missing data and of responses at the floor and ceiling (n = 276)
Subscale and Item | Missing Number (%) | Floor Number (%) | Ceiling Number (%) |
|---|---|---|---|
General health: GH | Â | Â | Â |
   5-level health rating | 1 (<1) | 11 (4) | 7 (3) |
General vision: GV | Â | Â | Â |
   5-level general vision | 2 (<1) | 6 (2) | 1 (<1) |
Near vision: NV | Â | Â | Â |
   Reading normal newsprint | 16 (6) | 49 (18) | 38 (14) |
   See well up close | 36 (13) | 43 (16) | 43 (16) |
   Finding objects on crowded shelf | 78 (28) | 31 (11) | 47 (17) |
Distance vision: DV | Â | Â | Â |
   Going out to movies/plays | 88 (32) | 72 (26) | 37 (13) |
   Going down stairs at night | 24 (9) | 38 (14) | 36 (13) |
   Reading street signs | 11 (4) | 27 (10) | 53 (19) |
Driving: DR | Â | Â | Â |
   Daylight familiar places | 169 (61) | 43 (16) | 39 (14) |
   Driving at night | 221 (80) | 15 (5) | 7 (3) |
Peripheral vision: PV | Â | Â | Â |
   Seeing objects off to side | 6 (2) | 8 (3) | 47 (17) |
Color vision: CV | Â | Â | Â |
   Difficulty matching clothes | 27 (10) | 5 (2) | 158 (57) |
Ocular pain: OP | Â | Â | Â |
   Amount pain | 1 (<1) | 2 (<1) | 122 (44) |
   Amount time: pain | 0 | 7 (3) | 189 (69) |
Role limitations: RL | Â | Â | Â |
   Accomplish less | 1 (<1) | 31 (11) | 85 (31) |
   Limited in endurance | 3 (1) | 29 (11) | 105 (38) |
Dependency: DP | Â | Â | Â |
   Need much help from others | 0 | 32 (12) | 143 (52) |
   Stay home most of time | 1 (<1) | 38 (14) | 127 (46) |
   Rely too much on other's word | 0 | 29 (11) | 154 (56) |
Social function: SF | Â | Â | Â |
   Seeing how people react | 40 (14) | 22 (8) | 64 (23) |
   Visiting others | 25 (9) | 22 (8) | 98 (36) |
Mental health: MH | Â | Â | Â |
   Amount true: frustrated | 1 (<1) | 30 (11) | 117 (42) |
   Amount true: embarrassment | 1 (<1) | 31 (11) | 134 (49) |
   Amount true: no control | 2 (<1) | 57 (21) | 86 (31) |
   Amount true: worry | 1 (<1) | 40 (15) | 32 (12) |
Optional items | Â | Â | Â |
Near vision: NV | Â | Â | Â |
   Reading small print | 6 (2) | 53 (19) | 36 (13) |
   Reading mail/bills accurately | 34 (12) | 41 (15) | 48 (17) |
   Shaving/styling hair/makeup | 3 (1) | 3 (1) | 150 (54) |
Distance vision: DV | Â | Â | Â |
   Recognizing faces in room | 19 (7) | 25 (9) | 78 (28) |
   Participating in sports/outdoors | 105 (38) | 41 (15) | 62 (23) |
   Seeing television program | 5 (2) | 17 (6) | 91 (33) |