Validation of the Arabic Version of the Long-Term Conditions Questionnaire (LTCQ): A Study of Factor and Rasch Analyses
Abstract
1. Introduction
Objectives
2. Materials and Methods
2.1. Data Collection and Study Instruments
2.2. Tool Validation
2.3. Sample Size Calculations
2.4. Statistical Analysis
3. Results
Rasch Model Analysis
4. Discussion
Strengths, Limitations, and Future Directions
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
CFA | Confirmatory factor analyses |
CFI | Comparative Fit Index |
DIF | Differential item functioning |
EFA | Exploratory factor analyses |
EQ-5D | EuroQol 5 Dimensions |
KMO | Kaiser–Meyer–Olkin |
LTCQ | Long-Term Conditions Questionnaire |
MinRes | Minimum residual |
MSE | Outfit mean square |
NCCDs | Non-communicable chronic diseases |
PROMs | Patient-reported outcome measures |
RMSEA | Root Mean Square Error of Approximation |
SRMR | Standardized Root Mean Square Residual |
TLI | Tucker–Lewis Index |
WLSMV | Weighted Least Squares Mean and Variance adjusted |
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Count (%) or Median (IQR) | ||
---|---|---|
Age | 42 (28–55) | |
Gender | Female | 674 (63.8%) |
Male | 383 (36.2%) | |
Education | High school or less | 352 (33.4%) |
College/University degree | 702 (66.6%) | |
Average monthly income (Jordanian Dinar) * | <500 | 577 (54.6%) |
500–1000 | 348 (32.9%) | |
>1000 | 132 (12.5%) | |
Marital status | Not married | 395 (37.4%) |
Married | 662 (62.6%) | |
Health insurance | Public | 284 (26.9%) |
Private | 209 (19.8%) | |
Military | 136 (12.9%) | |
Not insured | 428 (40.5%) | |
Number of medications used | 2 (1–4) | |
Disease duration (years) | 5 (1–10) | |
Number of chronic diseases | 1 (76.4%) | |
2 (16.2%) | ||
≥3 (7.4%) | ||
Working in the medical field | No | 768 (72.7%) |
Yes | 289 (27.3%) |
Never | Rarely | Sometimes | Often | Always | |
---|---|---|---|---|---|
Count (%) | |||||
1. Able to cope well with health conditions | 99 (9.4%) | 107 (10.1%) | 342 (32.4%) | 338 (32%) | 171 (16.2%) |
2. Able to fulfil responsibilities | 57 (5.4%) | 94 (8.9%) | 251 (23.7%) | 386 (36.5%) | 269 (25.4%) |
3. Able to be as physically active as you wanted | 59 (5.6%) | 134 (12.7%) | 374 (35.4%) | 335 (31.7%) | 155 (14.7%) |
4. Felt in control of daily life | 55 (5.2%) | 105 (9.9%) | 286 (27.1%) | 405 (38.3%) | 206 (19.5%) |
5. Able to take part in activities you enjoy | 62 (5.9%) | 144 (13.6%) | 324 (30.7%) | 358 (33.9%) | 169 (16%) |
6. Felt that your home is suitable for your needs | 70 (6.6%) | 104 (9.8%) | 219 (20.7%) | 347 (32.8%) | 317 (30%) |
7. Felt safe at home | 41 (3.9%) | 75 (7.1%) | 160 (15.1%) | 261 (24.7%) | 520 (49.2%) |
8. Felt safe outside the home | 95 (9%) | 147 (13.9%) | 320 (30.3%) | 317 (30%) | 178 (16.8%) |
9. Felt bothered by symptoms * | 142 (13.4%) | 128 (12.1%) | 363 (34.3%) | 249 (23.6%) | 175 (16.6%) |
10. Felt more dependent on others than you wanted * | 280 (26.5%) | 311 (29.4%) | 267 (25.3%) | 144 (13.6%) | 55 (5.2%) |
11. Felt lonely due to health conditions * | 369 (34.9%) | 216 (20.4%) | 255 (24.1%) | 154 (14.6%) | 63 (6%) |
12. Worried about being treated differently * | 395 (37.4%) | 199 (18.8%) | 257 (24.3%) | 143 (13.5%) | 63 (6%) |
13. Found health/other services difficult to cope with * | 328 (31%) | 206 (19%) | 296 (28%) | 151 (14.3%) | 76 (7.2%) |
14. Found treatments difficult to cope with * | 361 (34.2%) | 234 (22.1%) | 280 (26.5%) | 110 (10.4%) | 72 (6.8%) |
15. Felt that your health conditions made you unhappy * | 249 (23.6%) | 182 (17.2%) | 378 (35.8%) | 181 (17.1%) | 67 (6.3%) |
16. Felt you knew enough about your health conditions | 101 (9.6%) | 119 (11.3%) | 296 (28%) | 339 (32.1%) | 202 (19.1%) |
17. Had enough social contact with people | 55 (5.2%) | 103 (9.7%) | 256 (24.2%) | 350 (33.1%) | 293 (27.7%) |
18. Had enough support to cope well with health conditions | 84 (7.9%) | 141 (13.3%) | 280 (26.5%) | 306 (28.9%) | 246 (23.3%) |
19. Felt confident in managing health conditions | 65 (6.1%) | 122 (11.5%) | 258 (24.4%) | 371 (35.1%) | 241 (22.8%) |
20. Able to live your life as you want | 83 (7.9%) | 119 (11.3%) | 307 (29%) | 340 (32.2%) | 208 (19.7%) |
Items | EFA Loadings (F1) | EFA Loadings (F2) | Communality | CFA Loading | Outfit | Infit | Location | Thresholds | DIF | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | |||||||||
LTCQ 1 | 0.55 | 0.09 | 0.35 | 0.62 | 1.16 | 1.12 | −0.32 | −1.47 | −0.99 | −0.03 | 1.31 | 0.00 |
LTCQ 2 | 0.77 | 0.0 | 0.59 | 0.75 | 0.84 | 0.87 | −0.75 | −1.77 | −1.18 | −0.45 | 0.83 | 0.00 |
LTCQ 3 | 0.7 | −0.02 | 0.48 | 0.71 | 0.94 | 0.96 | −0.44 | −1.90 | −1.11 | 0.04 | 1.42 | −0.01 |
LTCQ 4 | 0.72 | −0.02 | 0.51 | 0.73 | 0.89 | 0.94 | −0.64 | −1.84 | −1.18 | −0.33 | 1.17 | 0.05 |
LTCQ 5 | 0.7 | −0.04 | 0.47 | 0.66 | 1.00 | 1.02 | −0.47 | −1.87 | −1.04 | −0.08 | 1.34 | −0.02 |
LTCQ 6 | 0.7 | −0.02 | 0.48 | 0.58 | 1.07 | 1.05 | −0.74 | −1.64 | −1.06 | −0.46 | 0.60 | −0.01 |
LTCQ 7 | 0.71 | 0.05 | 0.53 | 0.68 | 0.85 | 0.95 | −1.19 | −1.86 | −1.25 | −0.75 | −0.10 | 0.03 |
LTCQ 8 | 0.66 | −0.07 | 0.41 | 0.5 | 1.23 | 1.17 | −0.33 | −1.56 | −0.88 | 0.00 | 1.24 | 0.11 |
LTCQ 10 | −0.06 | 0.62 | 0.37 | 0.68 | 1.11 | 1.11 | −0.74 | −1.95 | −1.03 | −0.26 | 0.72 | −0.03 |
LTCQ 11 | 0.06 | 0.78 | 0.65 | 0.86 | 0.82 | 0.88 | −0.80 | −1.86 | −0.93 | −0.24 | 0.34 | 0.01 |
LTCQ 12 | 0.0 | 0.81 | 0.65 | 0.8 | 0.86 | 0.92 | −0.84 | −1.83 | −0.97 | −0.26 | 0.25 | −0.04 |
LTCQ 13 | −0.04 | 0.67 | 0.43 | 0.52 | 1.15 | 1.14 | −0.67 | −1.73 | −0.91 | −0.11 | 0.47 | 0.04 |
LTCQ 14 | −0.02 | 0.7 | 0.48 | 0.67 | 1.00 | 1.03 | −0.78 | −1.66 | −1.05 | −0.27 | 0.38 | −0.04 |
LTCQ 15 | 0.05 | 0.67 | 0.48 | 0.7 | 1.02 | 1.03 | −0.53 | −1.92 | −0.91 | 0.19 | 0.77 | −0.06 |
LTCQ 16 | 0.59 | −0.19 | 0.31 | 0.48 | 1.48 | 1.31 | −0.39 | −1.46 | −0.92 | −0.13 | 1.12 | −0.01 |
LTCQ 17 | 0.71 | 0.03 | 0.51 | 0.65 | 0.96 | 0.97 | −0.78 | −1.82 | −1.16 | −0.41 | 0.70 | −0.03 |
LTCQ 18 | 0.67 | 0.03 | 0.46 | 0.68 | 1.00 | 1.00 | −0.52 | −1.63 | −0.92 | −0.16 | 0.87 | 0.02 |
LTCQ 19 | 0.67 | 0.06 | 0.47 | 0.72 | 0.94 | 0.97 | −0.63 | −1.76 | −1.05 | −0.32 | 0.95 | 0.01 |
LTCQ 20 | 0.73 | 0.08 | 0.59 | 0.75 | 0.87 | 0.90 | −0.47 | −1.60 | −1.00 | −0.15 | 1.09 | −0.01 |
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Al-Qerem, W.; Abdo, S.; Jarab, A.; Hammad, A.; Eberhardt, J.; Al-Asmari, F.; Al-Sa’di, L.; Al-Shehadeh, R.; Khasim, D.; Zumot, R.; et al. Validation of the Arabic Version of the Long-Term Conditions Questionnaire (LTCQ): A Study of Factor and Rasch Analyses. Healthcare 2025, 13, 1485. https://doi.org/10.3390/healthcare13131485
Al-Qerem W, Abdo S, Jarab A, Hammad A, Eberhardt J, Al-Asmari F, Al-Sa’di L, Al-Shehadeh R, Khasim D, Zumot R, et al. Validation of the Arabic Version of the Long-Term Conditions Questionnaire (LTCQ): A Study of Factor and Rasch Analyses. Healthcare. 2025; 13(13):1485. https://doi.org/10.3390/healthcare13131485
Chicago/Turabian StyleAl-Qerem, Walid, Salwa Abdo, Anan Jarab, Alaa Hammad, Judith Eberhardt, Fawaz Al-Asmari, Lujain Al-Sa’di, Razan Al-Shehadeh, Dana Khasim, Ruba Zumot, and et al. 2025. "Validation of the Arabic Version of the Long-Term Conditions Questionnaire (LTCQ): A Study of Factor and Rasch Analyses" Healthcare 13, no. 13: 1485. https://doi.org/10.3390/healthcare13131485
APA StyleAl-Qerem, W., Abdo, S., Jarab, A., Hammad, A., Eberhardt, J., Al-Asmari, F., Al-Sa’di, L., Al-Shehadeh, R., Khasim, D., Zumot, R., Khalil, S., Aloshebe, G., & Aljazazi, J. (2025). Validation of the Arabic Version of the Long-Term Conditions Questionnaire (LTCQ): A Study of Factor and Rasch Analyses. Healthcare, 13(13), 1485. https://doi.org/10.3390/healthcare13131485