Crude and adjusted associations of NTLI with CVD risk factors among APCAPS adults, 2010–2012 (n=5937)
| N | Model predicted crude mean (95% CI) at the lowest NTLI (61.7 (4.1 on the log scale)) | Model predicted crude mean (95% CI) at the highest NTLI (1081.1 (7.0 on the log scale)) | P value | Model predicted age and gender adjusted mean change (95% CI) with increasing NTLI* | Model predicted fully adjusted mean change (95% CI) with increasing NTLI*†§ | |||||
| N | β (95% CI) | P value | N | β (95% CI) | P value | |||||
| Systolic blood pressure (mm Hg)‡ | 5752 | 117.2 (115.1 to 119.4) | 121.6 (119.2 to 123.9) | 0.04 | 5747 | 1.8 (0.4 to 3.2) | 0.01 | 5514 | 1.5 (0.3 to 2.6) | 0.01 |
| Body mass index (kg/m2) | 5924 | 20.3 (19.8 to 20.8) | 21.5 (21.0 to 22.1) | 0.01 | 5920 | 0.4 (0.1 to 0.8) | 0.01 | 5682 | 0.3 (0.03 to 0.7) | 0.05 |
| Fasting serum LDL (mmol/L) | 5287 | 2.4 (2.2 to 2.6) | 2.7 (2.5 to 2.9) | 0.06 | 5285 | 0.1 (0.01 to 0.2) | 0.04 | 5051 | 0.1 (−0.003 to 0.2) | 0.06 |
| Fasting plasma glucose (mmol/L)§ | 5328 | 5.1 (5.0 to 5.3) | 5.2 (5.0 to 5.4) | 0.61 | 5326 | 0.04 (−0.1 to 0.2) | 0.52 | 5094 | −0.002 (−0.1 to 0.1) | 0.97 |
Model predicted means (95% CIs), β coefficients (95% CIs) and p-values were obtained from multilevel linear regression models with clustering by household and village (using individual-level outcome data).
Participants were excluded if medicated for hypertension‡ or diabetes§.
*Mean change per integer increase in log transformed NTLI.
†Adjusted for age, gender, caste, religion, marital status and survey season.
β, beta-coefficient; APCAPS, Andhra Pradesh Children and Parents Study; CVD, cardiovascular disease; LDL, low-density lipoprotein; NTLI, night-time light intensity.